The Milwaukee Square Socket Adapter transforms impact socket wrenches into impact drivers with square hex bits for every application. Our Milwaukee Impact Duty socket adapters are made from a proprietary steel, heat treated to control hardness and provide durability with up to 50X life. The socket adapter has a heavy-duty construction for fastening capabilities in all impacts, built to withstand frequent use and save users the expense of having to buy a separate drill driver. Milwaukee hex to square socket adapters are engineered for maximum durability and long-lasting use.