This pump boosts nitrogen or helium gas up to 5,000 PSI for fixed wing and rotocraft servicing. Dependable, two-stage pump includes OEM Haskel amplifier with user value added enhancements from American Airworks, including added carry handle, hoses with quick connects and easy to use and service on/off valves. The company stocks Haskel OEM air amp models 55390 and 17934-1 (3,000 PSI) for quick sales.