Steel: CrV50Bv30 45-47 HRC Chromium plating D1: 42 mm D2: 36 mm Length: 77 mm Hexagonal sockets "Delo Tehniki" are made of chrome-vanadium steel using cold stamping method with subsequent heat treatment. The sockets are hardened and protected from corrosion by chromium plating. They are not afraid of high and long-term loads. The hexagonal profile is the best in terms of applying loads to classic hexagonal fittings. The elongated shape of the socket allows you to work with fittings on relatively high studs or with threaded parts of deep seating. The special ribbed base of the socket improves gripping characteristics and prevents slipping in hands. You can also purchase sets of extended sockets 1/2" or sets of tool with 1/2'' sockets.