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 V Type Twin Cylinder Air Compressor Pump Head Double Stage 0.6m3/h” is in sale since Wednesday, January 8, 2020. This…