By-CampbellHausfeld 1/2" Twin Hammer Air Impact Wrench Product Features Patented twin hammer technology Produces 350 ft lbs of torque for fast removal of stubborn fasteners Smooth low vibration operation Ergonomic design Tools center of gravity is right above the handle for balance during use minimizing fatigue Usern friendly control Oversized trigger rear forward/reverse level deflected exhaust and a grip improves end user interface///-Air Tools-Compressors/Air Tools/Campbell Hausfeld/Impact Wrenches/Impact Wrenches