Air Compressor Pump, Lubrication Type Splash Lubricated, Number of Stages 1, Maximum Output Power 1 hp, Free Air Flow Rate @ Maximum Pressure 1.9 cfm @ 115 psi, Number of Cylinders 1, Maximum Operating Pressure 115 psi, Flywheel Diameter 6 in, Flywheel Included Yes, Construction Cast Iron, Groove Section A, Number of Grooves 1, Valve Type Reed, Valve Material Stainless Steel, Rotation CCW, Stroke Length 1 3/8 in