3 Stage 4500 psi PCP Pump: 3-stage design, Max. Pressure 4500psi. Our PCP air pump compresses the maximum amount of air possible from each smooth stroke, saving 30% of your effort. The high pressure pump provides endless power, so you can have fun with your air guns on any terrain. 304 Stainless Steel: This air gun pump uses a one-piece stainless-steel barrel, which is rust-proof. A thickened outer layer makes the product reliable, stable, and long-lasting. The comfortable handle is easy to grasp and and ensures a non-slip grip. The pressure range of the pump is 0-40 mpa, and the working pressure is 0-30 mpa. The 19.7-inch long hose has a bursting pressure of 80 mpa and a working pressure of 0-63 mpa. Easy-to-Read Parameter: An accurate barometer can display the precise air pressure when inflating, avoid accidental tire blowouts, and ensure a secure working environment. The measuring range is from 0-6000Psi and working pressure is 0-4500Psi