Core Drill Bits for Concrete & Granite

A standard drill bit is solid and removes material as fine chips or dust throughout its length. A core drill bit is hollow and cylindrical, cutting only the outer ring of material and extracting a solid cylindrical core. This makes core bits far more efficient for drilling large-diameter holes through hard materials like concrete, granite, and stone.

Core drill bit pricing varies based on diameter, segment design, and material application. Specialty variants like the Shark Series or Turbo Core Bit are priced according to performance specifications. DI Tool offers pricing available on request — contact the team directly for a quote tailored to your project requirements and bit selection.

Many core drill bits are designed for wet cutting, where water cools the diamond segments and extends bit life — especially in hard materials like granite and cured concrete. Some variants support dry cutting for convenience on-site. Always check the specific bit's recommended cutting method before use to avoid premature segment wear or damage.

DI Tool core bits are available in variants optimized for asphalt, concrete, stone, and turbo high-speed cutting. Whether you're drilling through green or cured concrete slabs, granite countertops, masonry walls, or asphalt pavement, there is a purpose-specific bit in the lineup designed to deliver clean, fast, and precise cores.

Select a core bit based on the material hardness, required hole diameter, and whether wet or dry cutting is preferred. For hard concrete and granite, use a diamond-segment bit with a softer bond matrix to expose fresh diamonds faster. For softer stone or asphalt, a harder bond works better. Consult DI Tool's team for expert guidance.

To maximize core bit life, always use adequate water flow during wet cutting to reduce heat, avoid forcing the bit through material too aggressively, and match the bit type to the material hardness. Regularly inspect segments for wear or damage. Using the correct RPM and feed rate for the material also significantly prolongs bit longevity.