UNOAIR I-415 ( " ) Composite Impact Wrench ( Twin Hammer) Torque : 443 Ft-Lb Specification Model : I-415 Square Drive in : Bold Size Capacity in : 1-17 64 mm : 32 Free Speed rpm : 7600 Max Torque ft-lb : 443 n-m : 601 Overall Length in : 8-17 64 mm : 210 Net Weight lbs : 4.85 kgs : 2.2 Air Inlet ( in) : Air Hose ( in) : Avg.Air Consumption cfm : 4 m / min : 0.11