UNOAIR I-82A-6 ( 6" anvil) heavy duty Impact Wrench ( Rocking dog) Torque : 12000 Ft-Lb Specification Model : I-82A-6 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 : 22-27 32 mm : 580 Net Weight lbs : 28.66 kgs : 13 Air Inlet ( in) : Air Hose ( in) : Avg.Air Consumption cfm : 18 m / min : 0.51