Tile & Stone Drill Bit, Carbide-Tipped, 5/16-In.

Diablo, 5/16″ tile and stone carbide tipped drill bit. Diablo’s tile and stone carbide tipped drill bit range provides faster starts and longer life in tile, stone and glass. 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 stability by eliminating spinning in the drill chuck.