Air Compressor Pump, Lubrication Type Splash Lubricated, Number of Stages 2, Maximum Output Power 10 hp, Free Air Flow Rate @ Maximum Pressure 34.2 cfm @ 175 psi, Number of Cylinders 4, Maximum Operating Pressure 175 psi, Flywheel Diameter 19 3/8 in, Flywheel Included Yes, Pump Speed 700 RPM, Construction Cast Iron, Valve Type Reed, Valve Material Stainless Steel, Rotation CCW, Stroke Length 3 in