Diablo, 5 piece multi-material carbide tipped hammer drill bit set. Set consists of 5/32" x 4" x 6", 3/16" x 4" x 6", 1/4" x 4" x 6", 5/16" x 4" x 6" and 3/8" x 4" x 6" hammer drill bits. Diablo's multi-material carbide tipped hammer drill bit range provides faster starts and longer life in tile, masonry, concrete, wood and metal. 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 in a variety of applications. This range is impact strong for increased shank stability and durability in cordless and corded impact and drill drivers.