Air Compressor Pump, Lubrication Type Splash Lubricated, Number of Stages 2, Maximum Output Power 7.5 hp, Free Air Flow Rate @ Maximum Pressure 25.1 cfm @ 175 psi, Number of Cylinders 2, Maximum Operating Pressure 175 psi, Flywheel Diameter 16 1/2 in, Flywheel Included Yes, Pump Speed 1,020 RPM, Construction Cast Iron, Valve Type Reed, Valve Material Stainless Steel, Rotation CCW, Stroke Length 3 in