Manufactured from high density Chrome Vanadium Steel with a gloss phosphate black finish. These single hex (6 sided) sockets have a 1/2 inch drive and a depth of 40mm. Sizes included are 10, 11, 12, 13, 14, 16, 17, 19, 21, 24, 27, 30, and 32mm. The sockets are hardened to HRC45-47 and are supplied in a blow-molded case for protection.