The four-stage FX is handy for pumping to very high pressure (such as the 250 BAR my Cricket can take).
Quote from: PaulF on August 26, 2015, 10:27:39 PMThe four-stage FX is handy for pumping to very high pressure (such as the 250 BAR my Cricket can take).What's it like pumping to those kinds of pressures?Jere