Portable, handheld, lightweight nitrogen filler replaces your bulky tank. Includes high pressure button operated valves regulating the flow in and out to achieve pressure via a precision no-loss connector and 40mm liquid filled gauge. Nitrogen is supplied through a replaceable 95cc cartridge bottle that is DOT approved for shipment via common carrier. For use with all nitrogen filled shocks, bump stops, performance racing tires, and a variety of other applications where precision pressure adjustments are needed.