JET® Impact Wrench, Tool/Kit: Tool, 1/2 in Drive, 1300 bpm Blows per Minute, 140 to 680 lb Torque, 7300 rpm Speed, 5.4 cfm Air Flow, 1/4 in NPT Air Inlet, 3/8 in Minimum Hose, Composite Housing Material, 112.2 dB Power/101.2 dB Pressure Sound Level, 6.85 in L Overall Length JET® 505126 Impact Wrench, 1/2 in Drive, 140 to 680 lb Torque