Specification: Free Speed (rpm): 4,000 Max.Torque ft-lb (N.M): 1800 (2441) Overall length: 292mm Air Inlet (inch) : 1/2 Air Hose (inch): 3/4 Average Air Consumption (cfm) / (1/min) : 12.0 / (340) Net Weight: 11Kg Warranty 6 Months