This is a brand new scuba fill station for filling your high pressure nitrogen/compressed air tanks for paintball from a scuba tank that you can fill at your local dive shop at a fraction of the cost.It includes a Q/D to connect to the fill nipple on most systems-Max psi of 4500.With rent or own scuba tanks, you can also take your air with you for those games away from the field. Stop paying those high prices at the paintball field for compressed air fills.Woks on Standard Scuba K-Valve, J-Valve and H-ValveBuy it now,supply free extra orings.