Features: Charging port adapter R12 R22 Port to accept R134a quick disconnect. These low/high side retrofits/adapters/fittings will convert your old 1/4" SAE or 7/16" 20UNF R12 R22 charging port and make it accept R134a quick disconnect hose. Installations have removable schrader valves. On the high side: red, 7/16-20UNF or 1/4" SAE. Blue: 7/16-20UNF or 1/4" SAE. Can be matched used with valve, connecting with thread There are gas control valves inside, equipped with plastic protective cover Specification: Item: Straight Adapters w/ Valve Core and Service Port Caps Material: Stainless Steel and Plastic Low Side, 1/4 (7/16"-20) x 13mm High Voltage Side, 1/4 (7/16"-20) ) x 16mmC/w removable core valves, and service port caps. Package includes: 1 Pc x Blue Low Side Quick Connector. 1 Pc x Red High Side Quick Connector. 1 Pc x 13mm Blue Screw Cap. 1 Pc x 16mm Red Cap. 34390 Hot sale