The MILWAUKEE SHOCKWAVE 3/8" Impact Duty Socket Adapters transform the user's impact socket wrench into an impact driver with square hex bits for every application. The Impact Duty Socket Adapters are made from proprietary steel and heat treated to control hardness and provide extreme durability and up to 30X life. The hex bits withstand frequent use and save users the expense of having to buy separate drill drivers. Compatible with ?" square input drives, it allows users to utilize any 3/8" hex bit for a variety of tightening and unscrewing tasks.