ACDelco Tools AEI1203 120V AC Heavy Duty Jumbo 1/2-Inch Impact Wrench Delivers 782 ft-lbs of reverse torque and 500 ft-lbs of tightening torqu Powerful in-house motor with external changeable carbon brush 2-finger trigger with soft grip provides comfortable trigger control Durable metal gearbox housing Built-in LED light for convenient illumination during work