Air Compressor Pump, Lubrication Type Splash Lubricated, Number of Stages 2, Maximum Output Power 10 hp, 15 hp, Free Air Flow Rate @ Maximum Pressure 50.0 cfm @ 175 psi, Number of Cylinders 2, Maximum Operating Pressure 175 psi, Flywheel Diameter 17 1/2 in, Flywheel Included Yes, Pump Speed 1,100 RPM, Duty Cycle Continuous, Construction Cast Iron, Groove Section B, Number of Grooves 2, Valve Type Finger, Cylinder Material Cast Iron, Rotation CCW, Stroke Length 4 in