UNOAIR I-446 ( " ) Composire Impact Wrench ( Twin Hammer) Torque : 516 Ft-Lb Specification Model : I-446 Square Drive in : Bold Size Capacity in : 1- mm : 35 Free Speed rpm : 5700 Max Torque ft-lb : 516 n-m : 700 Overall Length in : 8-17 64 mm : 210 Net Weight lbs : 5.95 kgs : 2.7 Air Inlet ( in) : Air Hose ( in) : Avg.Air Consumption cfm : 6 m / min : 0.17