UNOAIR I-49 ( " ) Impact Wrench ( Pin Clutch) Torque : 450 Ft-Lb Specification Model : I-49 Square Drive in : Bold Size Capacity in : u ? mm : 16 Free Speed rpm : 7000 Max Torque ft-lb : 450 n-m : 610 Overall Length in : 7- mm : 191 Net Weight lbs : 5.29 kgs : 2.4 Air Inlet ( in) : Air Hose ( in) : Avg.Air Consumption cfm : 8 m / min : 0.23