Cylinder Replacement Pump, Lubrication Type Splash Lubricated, Number of Stages 1, Maximum Output Power 1.5 hp, Free Air Flow Rate @ Maximum Pressure 2.66/3.72 cfm @ 145 psi, Number of Cylinders 1, Maximum Operating Pressure 145 psi, Flywheel Diameter 10 1/8 in, Flywheel Included Yes, Pump Speed 1,000 RPM, Construction Aluminum, Cast Iron, Groove Section A, Number of Grooves 1, Valve Type Reed, Valve Material Stainless Steel, Rotation CCW, Stroke Length 1 7/8 in