6" Dry Turbo Core Bit for light reinforced concrete, gunite, and cement block. For use with core drills and angle grinders with 5/8-11 thread. Can be used with or without water. Made with a 10-inch vented barrel, 7 mm high dry turbo segments and a 5/8-11 thread arbor. Order the best 6" Dry Turbo Core Bit on the market with kwik shipping today.