Steel: CrV50Bv30 45-47 HRC Chromium plating D1: 24 mm D2: 22 mm Length: 38 mm "Delo Tekhniki" twelve-point socket wrenches are made from chromium-vanadium steel using cold stamping and subsequent heat treatment. The socket wrenches are hardened and protected from corrosion with chromium plating. They can withstand high and prolonged loads. The twelve-point profile provides greater freedom for positioning the wrench on the fastener. The angle of rotation between the flat sides of the fastener is 30°. It is used for working with twelve-point and hexagonal fastener profiles. The special textured pattern on the base of the wrench improves grip characteristics and prevents slipping in the hands. You can also purchase: - a set of twelve-point sockets 1/2" or - a tool set with socket wrenches 1/2"