Steel: CrV50Bv30 45-47 HRC Chrome plating D1: 18 mm D2: 22 mm Length: 38 mm The "Delo Tekhniki" twelve-point socket wrenches are made from chrome-vanadium steel using cold stamping and subsequent heat treatment. The socket wrenches are hardened and protected from corrosion by chrome plating. They can withstand high and prolonged loads. The twelve-point profile provides greater freedom for positioning the socket wrench on the fastener. The angle of rotation between the faces of the fastener is 30°. It is used for working with both twelve-point and hexagonal profile fasteners. The special knurled texture on the base of the socket wrench improves grip characteristics and prevents slipping in the hands. You can also purchase a set of 12-point socket wrenches 1/2'' or a tool set with socket wrenches 1/2''.