Steel: CrV50Bv30 45-47 HRC Chroming Set on a plastic holder. Tool set includes: Tool type Size, features SKU 6-sided sockets 3/8'' 7, 8, 10, 12, 13, 14, 15, 17, 19, 22 mm 610 0xx 45-tooth ratchet 3/8'' 200 mm (45 teeth) 618 745 "Delo Tekhniki" sockets are made of chrome-vanadium steel using cold stamping and subsequent heat treatment. The sockets are hardened and protected from corrosion by chroming. They are not afraid of high and prolonged loads. The hexagonal profile is the best in terms of applying loads to classic hexagonal fasteners. A special textured surface on the base of the socket improves grip and prevents slipping in hands.