Durable SDS hammer drill bits set, comes with most commonly used bits * Hardened heat treated chrome vanadium shaft with coated tungsten carbide tip * Special flute design for fast dust removal * Bits include 9/16-inch groove chisel, 9/16-inch flat chisel * Various sizes drill bits - 3/4, 11/16, 9/16, 5/8, 5/16, 3/8, 1/2, 3/16 and 1/4-inch