Diamond Core Bits for Stone

Diamond core bits drill the clean circular holes required for faucet installations, soap dispensers, drain fittings, and other countertop cutouts in granite, marble, porcelain, ceramic, and concrete. Using the right core bit for the material prevents chipping, cracking, and premature bit wear — the wrong bit on the wrong material is one of the most common and costly mistakes in stone installation. 

Pro Tool Haus carries core bits for hand drills, angle grinders, and CNC machines across a range of diameters from 1/4" to 4"+. Wet core bits require a water attachment for cooling — see Water Attachments. Vacuum brazed bits can run with limited water for specific applications. 

Filter by material type using the sub-collections: Stone Core Bits for granite and marble, Ceramic Core Bits for porcelain and ceramic tile, Tile Core Bits for thin tile and mosaics, and CNC Core Bits for machine applications.