The Bosch ITSA14 Impact Tough™ Socket Adapter helps to add versatility by converting a driver with a 1/4 In. quick change hex to a socket wrench. This allows the user to use sockets for driving nuts, bolts and external hex head screws. The socket adapter pin clicks into the socket to help provide a tight fit for better fastener grip. This impact-rated accessory absorbs torque peaks to reduce stress on the fastener. The adapter is made of forged steel to reduce breakage, and it has been enhanced to handle a new generation of higher torque impact drivers. It features laser-etched markings that are easy to read and won't rub off with repeated use.