Steel: CrV50Bv30 45-47 HRC Chrome plating D1: 47 mm D2: 38 mm Length: 56 mm "Delo Tekhniki" socket wrenches are made of chrome-vanadium steel using cold stamping method and subsequent heat treatment. The 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 wrench on the fastener. The angle of rotation of the wrench between the edges of the fastener is 30°. It is used in work with twelve-point and hexagonal profile fasteners.