Square Drive in. 1/2 Working Torque Range ft.lb 25-310 Max Torque @ 90 PSI Reverse ft.lb 425 Blows Per Minute Free Speed rpm 8400 Length in. 9.13 Avg. Air Consumption cfm 3.75 Actual Air Consumption @ load cfm 15 Air Inlet Thread Size NPTF in. 1/4 Min. Hose Size in. 3/8 Sound Pressure dB(A) 90 Vibration m/s? 3.4