Straight shank concrete bit is also called straight shank bits, hammer drill bits. The bit is made of carbide and steel. The tip of straight shank concrete bit is made of carbide and it's used to drill holes in concrete, brick or block. When we use it, we should attach the bit to the hammer drills. Straight shank bits are available in diameters from 1/8" to 1-1/2" and length up to 24".