These NOS refill stations are designed for performance retailers in the business of refilling nitrous bottles, or racers who use a substantial amount of nitrous oxide. They're safe, easy, and quick. The stations come complete with the plumbing, hoses, gauges, valves, fittings, and bottle stand necessary to refill any nitrous bottle. These refill stations will require a compressed air supply (80-100 psi), a mother bottle (through a local gas supplier), a scale, and a water separator/filter (to help pump service life).