Transform your impact socket wrench into an impact driver with the Shockwave 1/2 in. Square by 1/4 in. Hex Impact Adapter. Made with proprietary heat-treated steel, this dependable device is built to withstand frequent use and saves you the expense of having to buy a separate drill driver. Compatible with 3/8 in. square input drives, it allows you to utilize any 1/4 in. hex bit for a variety of tightening and unscrewing tasks.