Diablo DMANS1060 Tile And Stone Carbide Tipped Drill Bit, 1/2 InchDiablo tile and stone carbide tipped drill bit range provides faster starts and longer life in tile, stone and glass. Highlights: Size: 1 2 inch Optimized with a unique brazing and hardening process, the carbide tip extends life and productivity, allowing users to drill fast, accurate holes The multi ground carbide tip design allows for aggressive starts that produce clean holes when drilling into hard materials The 3 flat shank provides extra