Easy to use. Includes prefilled, disposable syringe, R-134a hosecoupler with check valve and R-12 adapterpurge fitting. Services 1 vehicle. Comes in full-color clamshell packaging. TP-2211CS Cool Seal prefilled syringe, clamshell packagedTP-2272 Hosecoupler with check valve and adapterpurge fitting107472 Adapterpurge fittingTP-9831CS R-1234yf adapter fitting