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Core Bits

Core drill bits and core drilling equipment for concrete and masonry. Clean holes for plumbing, electrical, and anchoring.

Choosing bits & rigs

Short guides that match how contractors search—no fluff, just specs and job-site context.

All guides

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Core bits drill clean, round holes in concrete and masonry for plumbing, electrical, HVAC, and anchoring. We stock diamond core bits and related equipment so you can core drill safely and efficiently.

Why core drill

Core drilling removes a cylinder of material instead of grinding it to dust. You get a clean hole with minimal mess and the option to reuse the core for testing. It's the standard method for large-diameter holes in concrete and block.

Sizes and types

Core bits are sized by inner diameter. Common sizes range from 1" to 6" and up. Choose a bit rated for your material (concrete, brick, block) and use with a compatible drill motor and stand. Wet drilling extends bit life and reduces dust.

Equipment

For best results, use a dedicated core drill motor and stand. Mount the stand securely and use water feed when possible. Wear PPE and follow the manufacturer's guidelines for speed and feed.

Shop core bits and drilling equipment below. Contact us if you need help choosing a size or type.

FAQ

What size core bit for a 4" pipe?
Use a core bit with an inner diameter that matches or slightly exceeds your pipe or sleeve. For a 4" pipe, a 4" or 4-1/2" core bit is typical; confirm with your spec.
Can I use a core bit in a handheld drill?
Small-diameter core bits can be used in a powerful handheld drill with a side handle. Larger diameters and deeper holes require a stand or rig to control wobble and ensure straight holes.
How to avoid cracking when core drilling?
Use water to keep the bit cool, drill at a steady feed rate without forcing, and support the back of the material if possible. For thin slab, consider drilling from both sides to avoid blowout.