... types:Cr-V 6150,8660,S2Surface treatment:sandblasted, tin-coating, Cu-coating, Ni-coating, Cr-coating, Zn-coatingHead types:PH, PZ, slot, Torx, ... square, hex, hex-plus, Z-spanner, Torx hollow, Torx plus, tri-wingType:single head ... , double head, head with round neck,non-magnetic and magnetic