Steel: CrV50Bv30 45-47 HRC Chromium plating D1: 18 mm D2: 22 mm Length: 78 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 from corrosion by chromium plating. They can withstand high and prolonged loads. The twelve-point profile provides greater freedom for positioning the wrench on fasteners. The angle of rotation of the wrench between the edges of the fastener is 30°. It is used for working with twelve-point and hexagonal profile fasteners. The elongated shape of the wrench allows working with fasteners on relatively long bolts or threaded parts with deep seating. The special knurled texture on the base of the wrench improves grip characteristics and prevents slipping in hands. You can also buy a set of 12-point elongated sockets 1/2'' or a tool set with socket wrenches 1/2''.