$66.99 DEWALT DWMT70773L 1/2-Inch Square Drive Impact Wrench-Heavy Duty. Maximum Torque 650 ft-lb helps 
DEWALT 20-Volt Max-Volt 1/2-in Drive Cordless Impact Wrench at Lowes.com
DEWALT Heavy-Duty Electric Corded Impact Wrench with Detent Pin â 1/2in. Drive, 345 Ft.-Lbs 
