JET 400434 - 1-inch Drive Impact Air Wrench - Super Heavy DutyExtremely powerful 1-Inch impact wrench – produces 1,800 ft/lbs of torqueUltimate power in reverse maximizes removal of stubborn rusted nutsTwin hammer mechanism provides more power and smooth, balanced impact blows for reduced vibrationPistol grip design allows access and maximum power in more confined spacesForward and reverse valve is equipped with 4 positive throttle settings