ACDelco AEI1208 120V AC 1/2-inch Heavy-Duty Impact Wrench, 470 ft-lbs, Hog Ring Anvil 470 ft-lbs of reverse torque and 300 ft-lbs of tightening torque. 0-2,600 RPM / 0-3,000 IPM for faster applications Powerful in-house motor with external changeable carbon brush Variable speed with reversible control Built-in LED light for convenient illumination during work