Air Compressor Pump, Lubrication Type Splash Lubricated, Number of Stages 1, Maximum Output Power 3 hp, Free Air Flow Rate @ Maximum Pressure 6.5/8.1 cfm @ 145 psi, Number of Cylinders 2, Maximum Operating Pressure 145 psi, Flywheel Diameter 10 1/8 in, Flywheel Included Yes, Pump Speed 1,400 RPM, Construction Aluminum, Cast Iron, Groove Section A, Number of Grooves 1, Valve Type Reed, Valve Material Stainless Steel, Rotation CCW, Stroke Length 1 9/16 in