181PSI 5.5HP 21CFM V Type. Twin Cylinder Air Compressor Pump Head Double Stage. 1181PSI 5.5HP 21CFM V Type Twin Cylinder Air Compressor Pump Head Double Stage. The item “181PSI 5.5HP 21CFM V Type Twin Cylinder Air Compressor Pump Head Double Stage” is in sale since Wednesday, September 25, 2019. This item is in the category “Home & Garden\Tools & Workshop Equipment\Air Tools & Air Compressors\Air Compressors”. The seller is “sfeezglobal” and is located in Tampa, Florida. This item can be shipped to United States.