Air Compressor Pump, Lubrication Type Splash Lubricated, Number of Stages 2, Maximum Output Power 7.5 hp, 10 hp, Free Air Flow Rate @ Maximum Pressure 35.0 cfm @ 175 psi, Number of Cylinders 2, Maximum Operating Pressure 175 psi, Flywheel Diameter 17 9/16 in, Flywheel Included Yes, Pump Speed 1,050 RPM, Duty Cycle Continuous, Construction Cast Iron, Groove Section B, Number of Grooves 1, Valve Type Finger, Rotation CW, Stroke Length 3 1/2 in