˙TORQUE: 20FT-LBS (27Nm) FREE SPEED: 300RPM; REAR EXHAUST ˙AIR INLET: 1/4", WEIGHT:0.5KGS, LENGTH: 133MM(5.23") ˙RECOMMENDED AIR HOSE SIZE: 5/16" ˙RECOMMENDED AIR PRESSURE: 90PSI(6.2BAR)