Alpha Professional Tools® introduces a Dry Core Bit designed for use on the job site without using water. Our Dry Core Bits fit on a high-speed angle grinder with a 5/8” -11 spindle. The Alpha® Dry Core Bit provides the best cutting performance and can drill through the toughest 1-1/4” granite or engineered stone countertop at the job site without using water. Not only is this convenient but it also increases productivity by cutting down on the amount of clean up needed when using water. Available in 1/2", 3/4", 1”, 1-1/4", 1-3/8", 1-1/2" and 2" sizes. Choose the Alpha® Dry Core Drill Bit where the convenience of dry application is essential.