Diablo DMAMM1190-S5 Carbide Tipped Hammer Drill Bit Set, 5 PieceDiablo's multi material carbide tipped hammer drill bit range provides faster starts and longer life in tile, masonry, concrete, wood and metal. Highlights: 5 Piece Multi material carbide tipped hammer drill bit set Optimized with a unique brazing and hardening process, the carbide tip extends life and productivity, allowing users to drill faster holes The multi ground grip point tip design allows for aggressive starts that produce clean, fast holes