Though impact sockets look similar to normal sockets and are physically interchangeable, impact sockets are made to withstand higher levels of force. Using a normal socket in an impact wrench can damage the socket and may result in injury Chrome Molybdenum, drop-forged, six-point impact sockets. Hardened and tempered for strength and with Phosphate finish for greater corrosion resistance. Ideal for use with air impact wrenches. Outside diameter 45mm Overall height 90mm