* Manufactured from Chrome Vanadium steel, hardened, tempered and with a phosphate finish for added corrosion resistance. * Deep WallDrive® sockets allow a transfer of up to 30% more torque to the fixing. * Contains sizes: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 27, 30, 32 mm. * Supplied in carry-case.