UNOAIR I-82A-8 ( 8" anvil) heavy duty Impact Wrench ( Rocking dog) Torque : 12000 Ft-Lb Specification Model : I-82A-8 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 : 24-3 8 mm : 619 Net Weight lbs : 29.98 kgs : 13.6 Air Inlet ( in) : Air Hose ( in) : Avg.Air Consumption cfm : 18 m / min : 0.51