This Impact Rated(TM) socket adapter by Craftsman(R) is made of black-coloured steel. With a length of 2", it is specifically designed to withstand the high torque output of an impact driver, but can also be used with a regular drill. Equipped with a hexagonal shank of 1/4", it allows you to equip 3/8" sockets to increase the versatility of your impact driver. Craftsman(R) Impact Rated(TM) socket adapters provide optimal socket retention with a durable ball detent design.