UNOAIR I-414 ( ½ " ) Composite Impact Wrench ( Twin Hammer) Torque : 600 Ft-Lb Specification Model : I-414 Square Drive in : ½ Bold Size Capacity in : ¾ mm : 19 Free Speed rpm : 8000 Max Torque ft-lb : 600 n-m : 814 Overall Length in : 7 mm : 178 Net Weight lbs : 4.63 kgs : 2.1 Air Inlet ( in) : ¼ Air Hose ( in) : Avg.Air Consumption cfm : 5 m³ / min : 0.14