JET 400424-1" Drive Composite Series Impact Wrench – Super Heavy DutyProduces an incredible 1,400 ft/lbs of nut wrenching torque in reverseUltimate power in reverse maximizes removal of stubborn rusted nutsSuper strong state-of-the-art composite bodyIncredibly lightweight – only 7.7 lbs almost three times lighter than traditional aluminum body 1-Inch impact wrenchesTwin hammer mechanism provides more power and smooth, balanced impact blows for reduced vibration