Used HILTI SIW 22T-A Cordless Industrial Power 22 Volt Heavy Duty Impact Wrench | eBay
Hilti - SIW 8-22 1/2" CORDLESS IMPACT WRENCH "This new impact wrench features two torque settings of 443 ft-lbs and 738 ft-lbs. Weighing in at 5.3 lbs for the bare tool." says