UNOAIR I-82A ( 1" anvil) heavy duty Impact Wrench ( Rocking dog) Torque : 12000 Ft-Lb Specification Model : I-82A Square Drive in : 1 Bold Size Capacity in : 1- mm : 38 Free Speed rpm : 3500 Max Torque ft-lb : 1200 n-m : 1627 Overall Length in : 17-17 32 mm : 445 Net Weight lbs : 26.01 kgs : 11.8 Air Inlet ( in) : Air Hose ( in) : Avg.Air Consumption cfm : 18 m / min : 0.51