Ezarc 5Pc Masonry Drill Bit Set Concrete Drill Bit Set, Hex Shank Drill, 3/8" Multipurpose drill bits set with 5 different diameter sizes: 5/32? (length 4.7? ), 3/16? (length 4.7? ), 1/4?(length 6? ), 5/16? (length 6? ), 3/8? (length 6? ). 5 pieces drill bits meet your different needs. Robust high-quality tungsten carbide head provides longer life in multi-materials including brick, block, tile, fiber cement, wood, plastic and metal Multi-grind sharp edges deliver high drilling speed even in hard materials, perform 85% faster in multi material than standard bits Big "U" flute design cleans debris out fast which make it a efficient metal and wood drill bits set Hex shank allows using in impactors and hammer drill/drivers for outstanding bit grip