ITEM NAME:R-12 to R-134a ALL R12 SYSTEMS Retrofit Conversion ADAPTER Fittings Kit VA- A4D4 R-12 to R-134a ALL R12 SYSTEMS Retrofit Conversion ADAPTER Fittings Kit VA- A4D4 100% brand new and high quality Charging port adapter R12 Port to accept R134a 'Quick Disconnect' Time-saving and effort-saving while installing, lightweight, shortcut Can be matched used with valve by connecting with screw thread There are gas valve inside, equipped with a plastic protective cap These Low/High side retrofits/adapters/fittings will convert your old 3/16inch or 1/4inch R12 charging port and make it accept the R134a quick disconnect hose Material: metal + plastic Size: Red: 3/8inch(High) Blue: 7/16inch(Low) colour: Color as shown Package Contents: 1 * Blue Cap 1 * Red Cap 2 * Removable Valves