Air Compressor Pump, Lubrication Type Splash Lubricated, Number of Stages 2, Maximum Output Power 5 hp, Free Air Flow Rate @ Maximum Pressure 14.4 cfm @ 175 psi, Number of Cylinders 2, Maximum Operating Pressure 175 psi, Flywheel Diameter 16 1/2 in, Flywheel Included Yes, Construction Cast Iron, Groove Section A/B, Number of Grooves 1, Valve Type Reed, Valve Material Stainless Steel, Rotation CCW, Stroke Length 2 1/4 in