UNOAIR I-48 ( " ) Impact Wrench ( Twin Hammer) Torque : 600 Ft-Lb Specification Model : I-48 Square Drive in : Bold Size Capacity in : mm : 19 Free Speed rpm : 6500 Max Torque ft-lb : 600 n-m : 814 Overall Length in : 7-7 8 mm : 200 Net Weight lbs : 6.17 kgs : 2.8 Air Inlet ( in) : Air Hose ( in) : Avg.Air Consumption cfm : 8 m / min : 0.23