Top 12 Core Drill Bits

Core drill bits are heavy-duty tools used to cut large-diameter holes in dense materials, such as reinforced concrete, cinderblock, and brick. They are also used to cut neat holes in porcelain, tile, and similar surfaces. Modern drill bits use carbide or diamond grit and can be used wet or dry.

Browse Best Core Drill Bits

SHDIATOOL Diamond Core Drill Bits 2PCS 1/4 Inch for Porcelain Ceramic Tile ...

  • Brand Name: SHDIATOOL
  • Model Name: A854621006x2
  • Size Options: 06mm(1/4 In.), 08mm(5/16 In.), 10mm(3/8 In.), 13mm(1/2 In.), 19mm(3/4 In.) and 12 other options.
  • Color Options: Black
  • Material Options: Artificial diamond and Steel body
  • Item Weight: 3.56 ounces
  • Satisfaction Score: 95%
  • Dimensions: 3.9 x 3.66 x 0.94 inches
  • Overall Score: 9.1
Store Website: www.amazon.com

Wet Drill Core Bits for Hard Concrete, Granite - 1/2″ Diameter 5/8"-11 ...

  • Brand Name: EDiamondTools
  • Model Name: WBP0012A5a
  • Size Options: 0-1/2 inch, 0-3/4 inch, 0-5/8 inch, 0-7/8 inch, 1 inch and 29 other options.
  • Material Options: Diamond
  • Item Weight: 1.12 pounds
  • Satisfaction Score: 89%
  • Dimensions: 17.52 x 1.61 x 1.61 inches
  • Overall Score: 8.7
Store Website: www.amazon.com

Toolocity cbadptr_0038 Adapter For Core Bits-5/8"-11 To 3/8″ Triangle ...

  • Brand Name: Toolocity
  • Model Name: cbadptr_0038
  • Color Options: Black
  • Material Options: Steel
  • Item Weight: 4.2 ounces
  • Satisfaction Score: 95%
  • Dimensions: 2.00 x 1.00 x 2.00 inches
  • Overall Score: 8.7
Store Website: www.amazon.com

DEWALT DWA1205 5/64″ Pilot Point Industrial Cobalt Drill Bit

  • Brand Name: DEWALT
  • Model Name: DWA1205
  • Material Options: Cobalt
  • Item Weight: 0.282 ounces
  • Satisfaction Score: 95%
  • Dimensions: 1.87 x 0.09 x 5.75 inches
  • Overall Score: 9.3
Store Website: www.amazon.com

SHDIATOOL Diamond Core Drill Bits 4 Inch for Hard Stone Concrete Marble Granite ...

  • Brand Name: SHANGHAI DIATOOL CO., LTD.
  • Model Name: A68804102
  • Size Options: Large:102mm(4 In.), 18mm, 20mm, 25mm(1 In.), 32mm(1-1/4 In.) and 7 other options.
  • Item Weight: 1.85 pounds
  • Satisfaction Score: 91%
  • Dimensions: 4.02 x 4.02 x 3.94 inches
  • Overall Score: 8.7
Store Website: www.amazon.com

1mm Diamond Drill Bit Jewelry Beach Sea Glass Shells Gemstones 1/24 Inch Tip ...

  • Brand Name: DRILAX
  • Model Name: 30p1mmCase
  • Material Options: Alloy Steel
  • Satisfaction Score: 90%
  • Dimensions: 5.5 x 2.2 x 0.6 inches; 3.21 Ounces
  • Overall Score: 8.3
Store Website: www.amazon.com

DEWALT Drill Bit, Pilot Point, Industrial Cobalt, 1/16-Inch (DWA1204)

  • Brand Name: DEWALT
  • Model Name: DWA1204
  • Material Options: Cobalt
  • Item Weight: 0.176 ounces
  • Satisfaction Score: 95%
  • Dimensions: 1.87 x 0.08 x 5.75 inches
  • Overall Score: 8.9
Store Website: www.amazon.com

DEWALT DWA1207 7/64″ Pilot Point Industrial Cobalt Drill Bit

  • Brand Name: DEWALT
  • Model Name: DWA1207
  • Material Options: Cobalt
  • Item Weight: 0.353 ounces
  • Satisfaction Score: 95%
  • Dimensions: 1.87 x 0.12 x 5.75 inches
  • Overall Score: 9.3
Store Website: www.amazon.com

Dry Core Bit for Brick and Concrete Block with Pilot Bit - 1″ Diameter ...

  • Brand Name: EDiamondTools
  • Model Name: DBP0100A5ADJ69
  • Size Options: 1 inch, 1-1/2 inch, 1-1/4 inch, 1-3/4 inch, 1-3/8 inch and 7 other options.
  • Item Weight: 1.19 pounds
  • Satisfaction Score: 79%
  • Dimensions: 19.49 x 1.61 x 1.61 inches
  • Overall Score: 7.7
Store Website: www.amazon.com

DEWALT DWA1206 3/32″ Pilot Point Industrial Cobalt Drill Bit

  • Brand Name: DEWALT
  • Model Name: DWA1206
  • Material Options: Cobalt
  • Item Weight: 0.317 ounces
  • Satisfaction Score: 95%
  • Dimensions: 1.87 x 0.11 x 5.75 inches
  • Overall Score: 9.1
Store Website: www.amazon.com

30 pcs SET 10 pcs. 1mm 10pcs. 2mm 10 pcs. 3mm Diamond Drill Bit Cylindrical ...

  • Brand Name: DRILAX
  • Model Name: 30PCSMIXED
  • Item Weight: 3.98 ounces
  • Satisfaction Score: 91%
  • Dimensions: 5.5 x 2.2 x 0.7 inches
  • Overall Score: 8.5
Store Website: www.amazon.com

Core Drill Bits Buying Guide

Masonry core drilling involves drill bits with notched teeth covered with carbide or industrial artificial diamond grit. These bits cut neatly into hard surfaces like concrete and stone and bring out a core of debris, and the resulting duct is used to run cables, lay pipes, or install extraction fans. They cut through virtually anything, allowing the user to put holes wherever they're most needed without causing any extra damage to the structure's surface. This guide is written to help shoppers pick the right masonry core drill for their home and workshop requirements.

Wet or dry drilling

Masonry core drills can generate a large amount of heat. Traditional core drill bits require that running water be present to carry the heat away--this isn’t always practical, of course. Some applications can become downright tricky when wet, such as cutting tile. Dry drill bits are more suitable for those, as they use cooling wax or lubricants to dissipate the heat instead. Dry bits are convenient when the worker wishes to skip the cleaning-up process that accompanies wet drilling. The only downside is that dry drilling tends to wear down the drill bit faster.

Purposes and measurements

The dimensions of the drill bit selected depend on what the worker intends to use it for. ⅜” bits are suitable for putting holes in tiles for screws to go through while drilling a hole in a granite countertop (as might be required for a vessel sink or faucets) requires a much larger bit, such as 4”. Other sundry applications, such as putting holes through walls, drilling into brick pavers, or other custom work, may need drill bits more suited to those individual applications. As they tend to cut very precisely, the worker can buy the exact size they need for the job--diamond grit cuts through nearly anything.

Drilling depth

The length of the drill bit affects how long it takes to drill a hole. A short drill bit can only core out so much material as will fit, meaning it might take multiple passes if the hole needed is longer than the drill’s length. This may be difficult and inconvenient if the worker uses a wet drill bit, as slurry removal also has to be managed alongside drilling. A drill bit of sufficient length can simplify the entire process, letting workers finish drilling the full required depth in one go.

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