Hexagon Socket 6-Point Regular 1/2in Drive 17mm. This Teng Tools professional hexagonal 1/2in Square Drive socket produced in accordance with ISO 9000 and AS954 specifications for increased torque and to reduce the risk of rounding fasteners. Manufactured from chrome vanadium steel with a satin finish.

The TENM1205176 1/2inch square drive socket has the following specifications:
Size: 17mm.
Length: 38mm.