Drop-forged, Chrome Molybdenum steel universal joint with a phosphate finish for added corrosion resistance. Suitable for use on all types of air impact tool. Features a spring-ball socket retainer and a drilled head to accept a retaining pin. Backed by a lifetime guarantee*. Drive: 1/2""Sq(F) x 1/2""Sq(M). Length: 70mm. Nett Weight: 0.14kg.