Steel: CrV50Bv30 45-47 HRC Chroming D1: 14 mm D2: 22 mm Length: 38 mm "Delo Tekhniki" twelve-point socket wrenches are made of chrome-vanadium steel using the cold stamping method with subsequent heat treatment. The socket wrenches are hardened and protected against corrosion through chroming. They withstand high and prolonged loads. The twelve-point profile provides greater freedom for positioning the wrench on fasteners. The angle of rotation between the edges of the fastener is 30°. It is used for working with twelve-point and hexagonal fasteners. The special rifled pattern on the base of the wrench improves grip characteristics and prevents slipping in the hands. You can also purchase a set of 1/2" twelve-point socket wrenches or a tool set with 1/2" socket wrenches.