UNOAIR I-8080 ( 1" anvil) heavy duty Impact Wrench ( Rocking dog) Torque : 1600 Ft-Lb Specification Model : I-8080 Square Drive in : 1 Bold Size Capacity in : 1-] mm : 41 Free Speed rpm : 3500 Max Torque ft-lb : 1600 n-m : 2170 Overall Length in : 13-7 8 mm : 352 Net Weight lbs : 21.61 kgs : 9.8 Air Inlet ( in) : Air Hose ( in) : Avg.Air Consumption cfm : 20 m / min : 0.57