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Best Masonry Core Drill Bits - Buying Guide

Last Updated: 09/15/2019

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Bestselling Masonry Core Drill Bits on Amazon

  1. Werkzeug center-1 Self Centering Hinge Tapper Core Drill Bit Set for Woodworking, Adjustable Door W...
  2. Bosch 8 Piece Glass and Tile Bit Set with Storage Case GT3000
  3. 30 Pack 1mm Diamond Drill Bit Jewelry Beach Sea Glass Shells Gemstones Lapidary 30pcs. 1/24 Inch Nec...
  4. Toolocity cbadptr_0038 Adapter for Core Bits-5/8-Inch-11 to 3/8-Inch Triangle Shank
  5. AFUNTA 8 pcs Center Drill Bit Set, Self Centering Hinge Tapper Core Hole Puncher Woodworking Tools f...
  6. SPTA 60Pcs Diamond Drill Bit Burrs(20pcs 1mm, 20pcs 2mm, 20pcs 3mm) Diamond Grinding Head Mounted Bu...
  7. Stadea ADC105K Core Drill Bit Adapter for Threaded Diamond Hole Saw Core Drill Bit - 3/8" Triangle t...
  8. DEWALT DWA1204 1/16" Pilot Point Industrial Cobalt Drill Bit
  9. SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Porcelain Ceramic Tile Marble Brick Vacuum Brazed H...
  10. DEWALT DW5572 1/4-Inch Diamond Drill Bit

  #1

Werkzeug center-1 Self Centering Hinge Tapper Core Drill Bit Set for Woodworking, Adjustable Door Window Drill Bits with 1 Hex Key & 8 Replacement Drill Bits (5/64 - 1/4 Inches), 16 Pieces

Model: center-1   |    Ean: 0787414951431   |   Asin: B07PGF4YRT

Feature A. Suitable for most general purpose electric drills B.Efficient and accurate positioning C.New upgrade 135 inclined blade drill bit D.Double-sided hole discharge sawdust design E.Come with 8 replacement bits: when the drill bit is damaged, just need replace it that can continue to use Disassembly Step 1.Prepare the center drill bit and hex key 2.Rotating the hex key 3.Grab the top of the bit and unscrew the shell (just like twist the lid off the drink) 4.If you need replace the drill bit, just need remove the broken bit and install the replacement bit Warm Tips - Use low speed when drilling (usually keep in 2000r/min - 3000r/min). Too fast speed will off center, break the bit or jammed - When drilling the hole, please adjust according to the hardness of the wood. If the wood is soft, you can choose the smaller center drill bit. If the wood is hard, you can choose the corresponding or bigger one - If you can't get the center drill bit out after drilling, use the hex key to separate the drill bit Package Included 8* Werkzeug Center Drill Bits (5/64', 7/64'', 9/64''*2, 11/64'', 13/64'', 5mm and 1/4") (with case) 1*Hex Key 8*Replacement Drill Bits Werkzeug - Your Professional Tool House We are committed to providing the best quality products, and largely dependent on product feedback from wonderful customers such as yourself. If you have any questions or concerns about our product, please do not hesitate to contact us, we always here to service you.

Features

  • Center Drill Bit: Werkzueg center drill is made of high speed steel drill bit and quenching treatment shell designed. High hardness, durable and superior drilling performance
  • Satisfy all you demand: Hinge drills come in 8 different sizes: 5/64', 7/64'', 2 of 9/64'', 11/64'', 13/64'', 5mm and 1/4. With 1 hex key and 8 replacement drill bits
  • Excellent Design: Automatic positioning center enhance accuracy and efficiency. Double-sided hole design fast and automatic discharge sawdust from the hole on both sides
  • Multipurpose: Perfect for hinges, handles, drawer slides, woodworking and etc. Suitable for professionals and DIYer
  • Important: Use low speed when drilling (usually keep in 2000r/min to 3000r/min). Too fast speed will off center, break the bit or jammed
  • See more on Amazon...

Brand: Werkzeug   |   Manufacturer: Evergreen Enterprises, Inc.

Package Dimensions: 1.1 x 4.4 x 6.9 inches (2.8 x 11.2 x 17.5 cm)

Amazon Price: $18.99 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $50.99

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  #2

Bosch 8 Piece Glass and Tile Bit Set with Storage Case GT3000

Model: GT3000   |    Mpn: GT3000   |    Ean: 7241870763241   |    PartNumber: GT3000   |   Asin: B001GNC8RS

Precision tip solves bit wander and bit walking. High-quality carbide tip with reinforced head prevents bit cracking. Innovative geometry allows bit to drill faster.

Features

  • PRECISION: Features Bosch's unique product design with a precision tip to help solve any bit wandering or bit walking.
  • QUALITY: This glass and tile set includes a high-quality carbide tip with a reinforced head to reduce stress, prevent bit cracking and the diamond ground cutting edges provide a longer life.
  • VERSATILE: Perfect for common applications such as relief holes for glass cutting, bathroom and shower installs, drilling and fastening mirrors, setting concrete screws in tile and many more.
  • RELIABLE: The three flat shank provides superior grip on large bits 5/16 in. and larger to prevent slippage. The Bosch GT2000 bit set is easy to use while still providing best-in-class speed so you can get the job done faster.
  • INNVOATIVE: Featuring the Bosch branded, innovative geometry allows bits to drill faster. Stay organized with the Brute Tough Storage Case. Included drill bit sizes: 1/8 in., 3/16 in., 1/4 in., 5/16 in., 3/8 in., 1/2 in., 5/8 in., 3/4 in.
  • See more on Amazon...

Brand: Bosch   |   Manufacturer: Bosch

Package Dimensions: 1.2 x 7.6 x 9.9 inches (3.0 x 19.3 x 25.1 cm)

Amazon Price: $25.00 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $52.96

Warranty: no

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  #3

30 Pack 1mm Diamond Drill Bit Jewelry Beach Sea Glass Shells Gemstones Lapidary 30pcs. 1/24 Inch Necklaces Earrings, Pendants, Bracelets, Beach, Tiles, Marble, Rocks, Ceramic, Porcelain, Case Coated Drills Burrs

Model: 30p1mmCase   |    Mpn: SK92015   |    Ean: 7535001542004   |    PartNumber: SK92015   |   Asin: B00AZMRZ4W

These bits are a very popular type and size used by Jewelry Designers for drilling a nice clean hole in Beach Sea Glass for making Earrings, Pendents and Bracelets. They have multiple layers of industrial diamond particles bonded to the tips which provides for longer drill life and are excellent for drilling completely through any thickness of Beach Sea Glass up to 1/2 thick. These Bits can be used in any high speed Dremel-Type Rotary Tool or Small Precision Drill Press with a 3/32 collet or adjustable collet.

Features

  • Set of 30 pcs. 1mm Diamond Drill Bits - 1/8 shank
  • Fits drills, flex shafts and dremels.
  • Used by Jewelry Designers for drilling clean holes
  • Drills Beach Sea Glass, Sea Shells, Rocks, Marbles, etc.
  • For Making Earrings, Pendents and Bracelets.
  • See more on Amazon...

Brand: DRILAX   |   Manufacturer: Precision Diamond Tools

Package Dimensions: 1 x 2.5 x 5.9 inches (2.5 x 6.4 x 15.0 cm)

Amazon Price: $14.99 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $14.99

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  #4

Toolocity cbadptr_0038 Adapter for Core Bits-5/8-Inch-11 to 3/8-Inch Triangle Shank

Model: cbadptr_0038   |    Mpn: cbadptr_0038   |    Ean: 0785533463149   |    PartNumber: cbadptr_0038   |   Asin: B00DHJK9JS

Adapter for core bits - 5/8"-11 to 3/8" Triangle Shank. This adapter transforms 5/8-11 thread to 3/8" triangle shank. The adapter can be used with all our tools with 5/8-11 thread including diamond core bits, diamond cup wheels, back holders, etc.

Features

  • Transform 5/8"-11 female arbor to 3/8" triangle male shank
  • Fits all tools with 5/8-11 female thread
  • Usually for diamond core bits and back holders
  • See more on Amazon...

Brand: Toolocity   |   Manufacturer: Applied Diamond Tools

Item Dimensions: 2 x 1 x 2 inches (5.1 x 2.5 x 5.1 cm)   |   Package Dimensions: 1.1 x 1.1 x 3.7 inches (2.8 x 2.8 x 9.4 cm)

Amazon Price: $6.45 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $6.45

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  #5

AFUNTA 8 pcs Center Drill Bit Set, Self Centering Hinge Tapper Core Hole Puncher Woodworking Tools for Cabinet Door 5/64'' 7/64'' 9/64'' 11/64'' 13/64'' 5mm 1/4''

Model: AF-center_drill_bit   |    Mpn: AF-center_drill_bit   |    PartNumber: AF-center_drill_bit   |   Asin: B07C8GBT4P

Specifications:
Material: Brass + high-speed steel
Type: Core Drill Bit
Color: Silver
Quantity: 8 pieces
Size: 5/64", 7/64", 9/64", 9/64", 11/64", 13/64", 5 mm, 1/4"

Packing List:
8 x Center Drill Bit

Features

  • PRECISE POSITIONING: No displacement, sawdust will be automatically discharged from top of hole on both sides, drill bit will not be blocked.
  • 7 DIFFERENT SIZE: Come with most common hinge screw sizes 5/64, 7/64, 9/64, 11/64, 13/64, 5mm, 1/4.
  • AUTOMATICAL DISCHARGE: Sawdust will be automatically discharged from the top of the holes on both sides, without drill blocked. Never miss the center of the hole again, references from the hinge bevels.
  • EASY TO REPLACE: Different hardness wood, need different centering drill, you just need take the screw apart and replace the drill.
  • EASY TO INSTALL: Unique design and perfect punch effect. Applicable for the installation of the door hinge. Easy to use and install, change bits fast which one-handed load and release.
  • See more on Amazon...

Brand: AFUNTA   |   Manufacturer: AFUNTA

Package Dimensions: 0.9 x 3 x 6.5 inches (2.3 x 7.6 x 16.5 cm)

Amazon Price: $12.59 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $12.59

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  #6

SPTA 60Pcs Diamond Drill Bit Burrs(20pcs 1mm, 20pcs 2mm, 20pcs 3mm) Diamond Grinding Head Mounted Burr Point Set with 5Pcs 3mm Twist Drill Bit For 1/8" Shank Rotary Tools Jade, Jewelry

 PartNumber: QA1826B2   |   Asin: B01M0OU2LF

SPTA 60Pcs Diamond Drill Bit Burrs(20pcs 1mm, 20pcs 2mm, 20pcs 3mm) 5Pcs 3mm Twist Drill Bits

About the product
Very popular drilling burr tools used by Jewelry Designers for drilling holes in Beach Sea Glasses,
Stones, Rocks for making Necklaces, Earrings, Pendants and Bracelets. Aiskaer tools have multiple
layers of fine industrial diamond particles bonded to the tips which provides for longer drill life.
Aiskaer tools are excellent for drilling through materials up to 1/2" thick.

Product Features:
Quantity: 1mm 20pcs 2mm 20pcs 3mm 20pcs
Shank: 1/8 inch
The total length: 1.77 inches
package: Plastic box, easy to carry and store
suitable for: Beach sea glass, sea shells, rocks, marbles, etc.

ATTENTION: DO NOT RUN DRY
Wet drilling only. These are delicate, very small diameter diamond drill bits.
The diamond coating is very thin. Can not take any abuse.
Start the hole at an angle. While holding the drill in hand,
carefully move the drill around just enough to ream out the sides of the hole. Let the tool do the work.

Package include:
20Pcs 1mm diamond burrs
20Pcs 2mm diamond burrs
20Pcs 3mm diamond burrs
5Pcs 3mm twist drill bit

Features

  • 60pcs Diamond Burrs - Excellent for fine detail work, cutting, engraving, carving, touch-up and finishing; Work on glass, metal , stone, ceramic, wood, plastic
  • Sold Storage Box - PC plastic box is sturdy, falling resistant and moistureproof, easy for carrying and hanging; All parts were in order and set was complete, well organized to prevent scattered and confused
  • Different Diameter Bits Accessories - 1mm, 2mm, 3mm router bit can reach More Carving, Great for all types of detail work.
  • Wide Usage - 1/8 diameter shanks, compatible with most rotary tools; Suitable to be used with hand drills, flex shafts. Highly recommended for jewelers, lapidary use, hobbies, crafts, craft modeling, home repair and so much more.
  • What You Will Get - SPTA-60Pcs diamond drill bit burrs, 5Pcs 3mm twist drill bit and our best service
  • See more on Amazon...

Brand: SPTA   |   Manufacturer: SPTA

Package Dimensions: 1.61 x 6.22 x 7.87 inches (4.1 x 15.8 x 20.0 cm)

Amazon Price: $12.99 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $12.99

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  #7

Stadea ADC105K Core Drill Bit Adapter for Threaded Diamond Hole Saw Core Drill Bit - 3/8" Triangle to 5/8" 11 Male

 Ean: 0841674120690   |    PartNumber: ADCS38SPRA58TR1P   |   Asin: B07G2SGCHT

Stadea Series Super A - ADC105K 3/8" triangle shank to 5/8" 11 threaded male adapter for hand and power tools such as hand drills, core drills.

Use 5/8" 11 Threaded Core Bits / Tools With 3/8" Shank Compatible Hand / Power Tools
It enables manual or power hand tools that takes 3/8" triangle shank to use tools or core bits with 5/8" 11 female threads. The one side of the adapter - the triangle shank connects to the power tool, the other sides of the adapter - 5/8" 11 male threaded connects to the core bit or similar accessory.

Specifications
- Adapter Shank Diameter: 3/8"
- Adapter Shank Shape: Triangle
- Adapter Thread: 5/8" 11 Male
- Shank Length: 1 1/2"
- Overall Length: 2 1/2"

Compatibility
It can be used with 5/8" 11 female threaded
- Core drill bits, Hole saws
- Profile wheels
- Cup grinding wheels
- Other compatible tools
to use conveniently with power tools that connects to 3/8" triangle shank.

Features

  • Diamond core drill bit adapter for threaded core drill bits hole saw, 3/8" triangle shank to 5/8" 11 threaded male
  • Connects to core bits with 5/8 11 threaded female arbor, and changes to connector to 3/8 triangle
  • High quality hardened alloy
  • Adapter for Drilling and Grinding Concrete, Glass, Granite, Stones
  • Overall length: 2 1/2, Shank length: 1 1/2
  • See more on Amazon...

Brand: STADEA   |   Manufacturer: Shop N Save Diamond Tools

Item Dimensions: 1.25 x 2 x 2.5 inches (3.2 x 5.1 x 6.4 cm)   |   Package Dimensions: 1.26 x 3.31 x 3.39 inches (3.2 x 8.4 x 8.6 cm)

Amazon Price: $14.99 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $14.99

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  #8

DEWALT DWA1204 1/16" Pilot Point Industrial Cobalt Drill Bit

Model: DWA1204   |    Mpn: DWA1204   |    Ean: 0885911411127   |    PartNumber: DWA1204   |   Asin: B015J5HNC8

The DEWALT DWA1204 1/16" Pilot Point Industrial Cobalt Drill Bit is designed for maximum speed and life in stainless steel and other hard metals. This bit features a pilot point and split tip design that starts on contact and eliminates bit walking along for more control. Commonly used for drilling into stainless steel, drilling into angle iron, I-Beams, and other similar metals

Features

  • Designed for maximum speed and life
  • Pilot point and split tip design
  • No bit walking - more user control
  • Intended to be used on hard metals
  • See more on Amazon...

Brand: DEWALT   |   Manufacturer: Dewalt

Item Dimensions: 5.75 x 0.08 x 1.87 inches (14.6 x 0.2 x 4.7 cm)   |   Package Dimensions: 0.2 x 2 x 5.5 inches (0.5 x 5.1 x 14.0 cm)

Amazon Price: $2.48 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $2.99

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  #9

SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Porcelain Ceramic Tile Marble Brick Vacuum Brazed Hole saw 35mm

 Ean: 0718760505542   |    PartNumber: A854751535   |   Asin: B072148BTN

Product Name:
Vacuum Brazed Diamond Dry Drilling Core Bits

Quantity:
1 Piece 35mm (1-3/8 Inch)

Specification:
Diameter: 35mm, Max working depth: 50mm, Diamond height: 15mm, Total Length: 75mm
**The Thread of bit is 5/8-Inch-11, Recommended Machine: angle grinder**
If you fit them on drill or other machine, you need an adapter, such as SDS, hex, Round plus shank...

Application :
Dry/wet drilling for porcelain tile, granite, marble, stone, Masonry, brick...

Feature:
1. Minimizing any breakage and safe for operator
2. High quality Diamond Grain provide fast and smooth drilling
3. Vacuum Brazed technology provide much longer working life than electroplated technology
=========THE END==========
Available Diameter: 6mm-152mm(1/6 Inch to 6 Inch).

Operation Tips for Vacuum Brazed Diamond Drill core bits
1.Do not use these drill bits with hammer mode
2.Only fit these drill bits on a cord drill, not cordless drill(no enough power)
3.Only for tile drilling not recommend for the material behind the tile
4.For horizontal drilling,just give a gentle pressure
For vertical drilling, the weight of the machine will give sufficient pressure
5.Start drilling as per following instructions:
1) Place the drill at a 45 degree angle
2) Drilling till the hole start to form
3) Bring the drill up into upright position
4) Continue to drill and swaying the machine along a circle

ABOUT SHDIATOOL:
We are a professional Manufacturer & Supplier of diamond tools in China,
If you have any needs or questions about our products,please contact us firstly, thanks,
we have good After-sales service, better quality and professional suggestions.

Features

  • 1pc 1-3/8 inch vacuum brazed diamond drill Ccore bits for porcelain ceramic tile.
  • Diameter 1-3/8 inch(35mm); Connection: 5/8-11 arbor; Diamond height 15MM,Total height: 75MM.
  • Machine: Angle Grinder Remark: *Max working depth: 50mm*.
  • Dry/wet drilling for porcelain tile marble stone masonry brick normal stone.
  • High quality Diamond Grain provide fast and smooth drilling.
  • See more on Amazon...

Brand: SHDIATOOL   |   Manufacturer: SHANGHAI DIATOOL CO., LTD.

Package Dimensions: 1.5 x 1.5 x 3.25 inches (3.8 x 3.8 x 8.3 cm)

Amazon Price: $19.29 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $21.17

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  #10

DEWALT DW5572 1/4-Inch Diamond Drill Bit

Model: DW5572   |    Mpn: DW5572   |    Ean: 7466655909052   |    PartNumber: DW5572   |   Asin: B000VR7E60

DEWALT DW5572 1/4-Inch Diamond Drill Bit

Features

  • Diamond Welded Tip for Greater life and Durability
  • Reverse Spiral Thread Delivers Continuous Water Feed for Longer Life and Increased Speed
  • Core Ejection Slot Removes Plug for Repetitious Holes
  • See more on Amazon...

Brand: DEWALT   |   Manufacturer: Dewalt

Item Dimensions: 2 x 4 x 6 inches (5.1 x 10.2 x 15.2 cm)   |   Package Dimensions: 1.42 x 2.68 x 4.53 inches (3.6 x 6.8 x 11.5 cm)

Amazon Price: $8.39 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $24.76

Warranty: 30 Day Money Back Guarantee

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  #11

Evergreen Welcome Fall Leaves Double-Sided Burlap Garden Flag - 12.5"W x 18" H

 Ean: 0808412449727   |    PartNumber: 14B3846   |   Asin: B01F44SZGC

Featuring intricate details, captivating embellishments, and timeless touches, our flags brilliantly blend quality design with stylish charm. Our Burlap Boutique collection is inspired by the textile's domination of the party, wedding, and home d cor scene as a go-to accent material. Each flag is carefully crafted from durable, weatherproof, and fray-resistant polyester burlap. The material has the look and feel of true burlap, but its special poly blend is designed to withstand the elements. Spirited artwork is heat-transferred onto both sides of the textured fabric to create a rustic yet chic look, and the flags feature a top sleeve for inserting hardware.Display your favorite burlap garden flag proudly in an outdoor space with any of Evergreen's garden flag stands or arbors. We also offer flag stand rubber stoppers, bases, window hangers, and more. Wrinkle, Cleaning and Storage Guide: Due to the nature of the packaging, wrinkling may have occurred. Once item is unfolded and mounted on hardware, the creases will naturally fall out. Spot clean only. Never put in a dryer. When not in use, fold and store in our Evergreen Hanging Flag Storage Organizer. It's conveniently designed to hang in a closet by an attached swivel hook.

Features

  • Celebrate autumn with this festive, double-sided fall flag
  • Crafted from durable, weatherproof, fray-resistant polyester burlap - Design is heat-transferred onto the textured fabric
  • Top sleeve fits onto any Evergreen garden flag hardware
  • Spot clean
  • Measures approximately 12 -5W x 18H
  • See more on Amazon...

Brand: Evergreen Flag   |   Manufacturer: Evergreen Enterprises, Inc.

Item Dimensions: 18 x 0.15 x 12.5 inches (45.7 x 0.4 x 31.8 cm)   |   Package Dimensions: 0.98 x 9.02 x 12.52 inches (2.5 x 22.9 x 31.8 cm)

Amazon Price: $12.99 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 2-3 business days
List Price: $12.99

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  #12

Malco CBB Replacement Cutter Bits for HC1 or HC2 Model, 6-Pack

Model: CBB   |    Mpn: CBB   |    Ean: 0686046531342   |    PartNumber: CBB   |   Asin: B00JJ6NHBU

Distinctive gold Bits, Bearings and Pivot Pin signify the longest lasting, fastest cutting, easiest adjusting solution for cutting holes in sheet metal. Malco Hole Cutters quickly install into the chuck of any corded or cordless drill as small as 1/4-inch (6.4 mm). Lightweight aluminum frames make these accessories extremely portable for a variety of hole cutting applications in sheet metal including 20-gauge (1.02 mm) galvanized steel. A compact model HC1 Hole Cutter is adjustable for making 2 to 12" (51 to 305 mm) diameter holes. The larger HC2 model cuts 2 to 20" (51 to 508 mm) holes. A combination English/Metric diameter gauge is included on the adjustable pivot slide for both models and both models use the same mill-type Cutter Bit and replacement parts.

Features

  • Longest lasting cutter bit
  • Versatile for a variety of metal work
  • Precision-fit sealed bearings
  • Easy-adjusting pivot pin
  • See more on Amazon...

Brand: Malco   |   Manufacturer: Malco

Item Dimensions: 0.75 x 1.5 x 8.5 inches (1.9 x 3.8 x 21.6 cm)   |   Package Dimensions: 0.4 x 1.5 x 7.6 inches (1.0 x 3.8 x 19.3 cm)

Amazon Price: $52.96 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $54.20

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  #13

SHDIATOOL Diamond Core Drill Bits 1-3/8 Inch for Hard Stone Concrete Marble Granite Brick Laser Welded Dry or Wet Hole Saws 35mm

 Ean: 0718760495270   |   Asin: B076LCFN4Y

Product Name:
Laser Welded Diamond Dry Drilling Core Bits

Quantity:
1pc 35mm(1-3/8-Inch)

Specification:
Diameter: 35MM, Total length: 100MM
The thread of this core drill bit is 5/8-Inch-11,Recommended Machine: angle grinder
If you fit them on drill or other machine, you need an adapter, such as SDS, hex, Round plus shank...

Application:
Drilling hard granite marble concrete all mature stone

Feature:
1. SUPREME Grade and Special bond matrix extends drilling life and improve the working efficiency
2. Laser welded technology avoid segments off when dry working
3. Turbo segments provide aggressive drilling speed (32mm & above)
4. Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanities
5. Vacuum brazed side protection offers clean cut & steel core protection (inside and outside both, 20MM & above )
6. Dry or Wet Drilling - use wet will greatly prolong the segment life
=======THE END======
Available Diameter: 6mm-102mm(1/6 Inch to 4 Inch).

Operation Tips for Laser Welded Diamond Dry core bits
1.Fix it on angle grinder tightly and rightly
2.Turn on the angle grinder and let the core bits rotating in the air to check if there is balance problem.
3.Hold the machine very steadily and give gentle pressure
4. Start drilling as per following instructions:
1) place the drill at a 30 degree angle, it will help to position
2) Drilling the material till the hole start to form
3) Bring the drill up into upright position slowly then keep drilling vertically.
5. Do not give too much pressure or sway the core bits when working
If find hard to drill, take a break and check the segments. If the segment become blunt, please try to sharp it by drilling a hole on the abrasive concrete and then continue to drill the hard material.

Features

  • 1-3/8"(35mm) Laser Welded Diamond Dry Drilling Core Bits.
  • Diameter:35mm(1-3/8 inch), Total length: 100mm, Thread: 5/8-11.
  • Dry or Wet Drilling - use wet will greatly prolong the segment life
  • Designed for drilling hard granite, marble, engineering stone, concrete, brick
  • Easily operate on Angle Grinder; Need an adapter for drill or other machine, such as SDS,hex,Round plus shank
  • See more on Amazon...

Brand: SHDIATOOL   |   Manufacturer: SHANGHAI DIATOOL CO., LTD.

Package Dimensions: 1.4 x 1.6 x 4.3 inches (3.6 x 4.1 x 10.9 cm)

Amazon Price: $32.99 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $32.99

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  #14

Concord Blades CBW02500SP 2-1/2 Inch Wet Concrete Diamond Core Drill Bit

Model: CBW02500SP   |    Mpn: CBW0250   |    Ean: 0812763022881   |    PartNumber: CBW0250   |   Asin: B00LQKTUO0

2-1/2 Inch Wet Concrete Diamond Core Drill Bit with 14 Inch Tube Length is used by professionals to do a quick cut into concrete with laser welded segments that contain high concentrations of top quality diamonds. This, combined with a special blend of metal powders, will help to deliver extremely fast cutting and long life in a variety of materials including concrete, cured concrete with heavy reinforcement and hard masonry materials. The newly designed Pro-U segment has double-pointed tips to penetrate quickly and hold a straight drilling path to reduce side drag, and also increases water flow to reduce heat and to remove slurry more efficiently. This concrete core bit is used for general purpose wet drilling on cured concrete with hard aggregate and medium to heavy steel reinforcement, and asphalt overlay on concrete using either a Handheld Core Drill or a Core Drill Rig.

Features

  • 10 mm segment height, 3.5mm Segment Width, 1-1/4" -7mm Arbor
  • Use Wet Only
  • This core bit is used for wet drilling on cured concrete with hard aggregate and medium to heavy steel reinforcement, and asphalt overlay on concrete
  • Does not come with a pilot bit
  • 14 tube length
  • See more on Amazon...

Brand: Concord Blades   |   Manufacturer: Concord Industrial Products

Item Dimensions: 2.5 x 2.5 x 14 inches (6.4 x 6.4 x 35.6 cm)   |   Package Dimensions: 3.5 x 3.5 x 17.8 inches (8.9 x 8.9 x 45.2 cm)

Amazon Price: $63.51 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $63.75

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  #15

Concord Blades CBD02500HP 2-1/2 Inch Laser Welded Dry/Wet Diamond Core Drill Bit

Model: CBD02500HP   |    Mpn: CBD0250   |    Ean: 0812763023093   |    PartNumber: CBD0250   |   Asin: B00LQKU8RI

2-1/2 Inch Laser Welded Dry/Wet Diamond Core Drill Bit with 9 Inch Tube Length is of professional quality for dry masonry with laser welded individual segments to hold up under extreme heat and cutting pressure. Barrel vents increase air flow to dissipate heat and cool the core bit. Specially formulated professional quality turbo segments provide fast cutting and long life. NOT RECOMMENDED ON CONCRETE and REINFORCED CONCRETE. This core bit is used for general purpose dry drilling on a variety of soft brick and concrete block using either a Handheld Core Drill or a Core Drill Rig.

Features

  • 10 mm segment height, 3.8mm Segment Width, 5/8"-11mm Arbor
  • Use Dry/Wet
  • This core bit is used for general purpose dry drilling on a variety of soft brick and concrete block using either a Handheld Core Drill or a Core Drill Rig
  • Does not come with a pilot bit
  • Item is a pearlescent color. It changes between white and silver depending on the lighting
  • See more on Amazon...

Brand: Concord Blades   |   Manufacturer: Concord Industrial Products

Item Dimensions: 2.5 x 2.5 x 9 inches (6.4 x 6.4 x 22.9 cm)   |   Package Dimensions: 3.1 x 3.2 x 11.5 inches (7.9 x 8.1 x 29.2 cm)

Amazon Price: $58.29 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $58.29

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  #16

Bosch ITPH235B Impact Tough 3.5 In. Phillips #2 Power Bits

Model: ITPH235B   |    Mpn: ITPH235B   |    Ean: 0000346483680   |    PartNumber: ITPH235B   |   Asin: B07MB2VH9Y

Bosch impact tough impact driver bits have been upgraded to deliver 10x life over standard impact bits. With an xtended torsion zone, precision engineering and heat-treated manufacturing process, These bits deliver tough torque and power for longer and with less CAM out. These impact tough bits are an impact-rated line of screw driving bits, double-ended bits, nutsetters, sockets and bit holders that have been enhanced to handle a new generation of higher torque impact drivers. These bits also come with high-visibility sleeves for greater user convenience.

Features

  • 10x life over standard impact bits
  • Xtended torsion zone helps to absorb high-torque of new impact drivers
  • Precision-engineered tips for a tighter fit and less CAM out
  • Heat-treated manufacturing for stronger bit
  • High-visibility sleeve with laser-etched markings for user convenience
  • See more on Amazon...

Brand: Bosch   |   Manufacturer: Bosch

Item Dimensions: 0.27 x 2.99 x 6.24 inches (0.7 x 7.6 x 15.8 cm)   |   Package Dimensions: 0.2 x 2.76 x 4.29 inches (0.5 x 7.0 x 10.9 cm)

Amazon Price: $13.42 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $13.42

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  #17

1-3/8'' Dry Diamond Core Drill Bit 5/8'-11 Thread for Granite 35mm Masonry Coring

 Ean: 0725350064273   |   Asin: B07P1Y8YVL

Product name:Diamond core drill bits for stone
Size(inch):1-38"
Segment height:10mm
Our diamond stond dry core bit fit on a high-speed angle grinder.
It provides the best cutting performance and can drill through the toughest 1-3/8" granite or engineered stone countertop at the job site without using water. Not only is this convenient but it also increases productivity by cutting down on the amount of clean up needed when using water.

Features

  • Diameter is 1-3/8'',5/8''-11 thread install on polishers or grinders
  • It is designed for dry drill core to granite on the job site
  • High frenquency/Laser welded available
  • Vacuum Brazed side protection offers clean cut & steel core protection.
  • Use wet or dry drilling for stone, wet using will greatly prolong the segment life
  • See more on Amazon...

Brand: Diex   |   Manufacturer: China

Package Dimensions: 1.42 x 1.54 x 4.49 inches (3.6 x 3.9 x 11.4 cm)

Amazon Price: $28.99 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $28.99

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  #18

Bosch T3926SC 13-Inch Extension Sds-Plus for Speedcore Thin-Wall Core Bits

Model: T3926SC   |    Mpn: T3926SC   |    Ean: 0000346430110   |    PartNumber: T3926SC   |   Asin: B00EMFOPB4

Bosch SDS-plus thin-wall core bits are optimized for drilling with smaller hammers. Core body range is 1-Inch up to 4-3/8-Inch with a usable cutting depth of 3-Inch. Extension plus bit beyond 8-Inch should not exceed 600 RPM.

Features

  • Core bit extension
  • 13-Inch extension, SDS-plus
  • Screw core bit onto shank
  • Works with thin-wall core bits, 1-1/2-Inch or larger
  • See more on Amazon...

Brand: Bosch   |   Manufacturer: Bosch

Item Dimensions: 16.75 x 1.6 x 0.86 inches (42.5 x 4.1 x 2.2 cm)   |   Package Dimensions: 1.1 x 1.7 x 16.8 inches (2.8 x 4.3 x 42.7 cm)

Amazon Price: $31.40 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $34.00

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  #19

DAMO Core Drill Bits Adapter 5/8"-11 Male to 3/8" Triangle Shank for Electric Hand Drills for Diamond Core Drill Bit Hole Saw

 Ean: 6946937102681   |    PartNumber: ADPT58T38S   |   Asin: B006JVO55U

DAMO ADPT58T38S allows electric drills with 3/8" shank to use 5/8"-11 female threaded tools such as diamond core drill bits, diamond drum wheels, diamond hand profilers, back holders and diamond grinding cup wheels.

The triangle shank connects to the power tool and the 5/8"-11 male threaded connects to 5/8"-11 female threaded attachment tools.

We DAMO Diamond Tools, LLC holds exclusive distribution to DAMO Trademark products as you can see clearly marked from the picture on the product listing.

Features

  • Adapter 5/8"-11 male to 3/8" shank;
  • Triangle shaft to prevent spinning in a chuck;
  • Used on electric hand drills;
  • Industrial grade heat treated steel for strength and durability;
  • Maximum RPM 10,000.
  • See more on Amazon...

Brand: DAMO   |   Manufacturer: DAMO Diamond Tools LLC.

Package Dimensions: 1.7 x 1.8 x 5 inches (4.3 x 4.6 x 12.7 cm)

Amazon Price: $19.90 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $19.90

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  #20

Bosch T3925SC 7 In. Extension SDS-plus for SPEEDCORE Thin-wall Core Bits

Model: T3925SC   |    Mpn: T3925SC   |    Ean: 0000346430103   |    PartNumber: T3925SC   |   Asin: B00EMFOPBE

Bosch SDS-plus thin-wall core bits are optimized for drilling with smaller hammers. Core body range is 1 In. up to 4-3/8 In. with a 3 In. usable cutting depth. Extension plus bit beyond 8 In. should not exceed 600 RPM.

Features

  • Core bit extension
  • 7 In. extension, SDS-plus
  • Screw core bit onto shank
  • Works with thin-wall core bits, 1-1/2 In. or larger
  • See more on Amazon...

Brand: Bosch   |   Manufacturer: Bosch

Item Dimensions: 10.5 x 1.63 x 0.81 inches (26.7 x 4.1 x 2.1 cm)   |   Package Dimensions: 0.5 x 1 x 10.1 inches (1.3 x 2.5 x 25.7 cm)

Amazon Price: $11.99 | as of 09/15/2019(11:17pm pst)
Availibility: Usually ships in 24 hours
List Price: $13.99

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