1.5 to 2 HP Replacement Single Stage V-Cylinder Air Compressor Pump Brand new two cylinder cast iron single stage air compressor pump. This is a 1.5 - 2 horsepower pump that will deliver 3.53 CFM at 1000 RPM with a max CFM of 4.5. This pump is most commonly used on compressors under 30 gallons in size and can be used with 110 volts or 220 volts 1.5 to 2 horsepower motor. Using a larger two horsepower motor and spinning around 1200 RPM, you will get a max of 4.5 CFM. This pump comes complete as shown in the photos, including intake filters and flywheel. See specifications below for more details. Features: Cast Iron Cylinder and Crankcase Equipped with Sight Glass for Easy Viewing of Oil Level Comes with Two Intake Filters Specifications Two Cylinder Single Stage 1.5-2 HP Recommended Working Pressure: 115 PSI Recommended RPM: 900-1200 CFM: 2.8-4.5 Flywheel Diameter: 10.5"