Alpha 1/2" High-Speed Dry Core Bit for Granite & Engineered Stone

Designed for Jobsite Drilling of Faucet-Mounting Holes in Countertops and Vanities Very Fast Cutting On Granite/Quartzite and Engineered Stone High-Quality Aggressive Core Bit Make Clean Rounded Corners for Square or Rectangular Sinkholes Versatile and Adaptable in Many Industries for Water, Gas and Electrical Piping Fits On Most Popular High-Speed Grinders