Bullet Points: 1、【Rugged and Durable】High and low voltage male connector adapters are durable, sturdy construction with high heat resistance and safety, made of high-quality metal and PP 2、【Easy to Disconnect】The low-high-side retrofits adapter accessory will convert your old 1/4" SAE or 7/16" 20UNF R12 R22 charging port and make it accept R134a quick disconnects 3、【Equipped with Air Valve】The retrofits fitting is equipped with an air valve and has a removable valve with a protective cap for easy and quick installation, connecting to the thread for use with the valve 4、【Removable】The low and high-side retrofits adapter fittings feature a removable American valve for easy disconnection and connection for quick and easy use 5、【Wide Use】This is the perfect conversion adapter kit, AC adapter port adapter retrofits r12 to r134a fully used to replace R12 R22 with R134A charging port 1/4" SAE or 7/16"-20UNF adapter Product Description: 1. Charging port adapter R12 R22 port accepts R134a quick disconnect 2. Fittings have detachable American valve 3. The threaded connection can be used with the valve, there is an air valve inside, and it is equipped with a PP protective cover 4. Stainless steel and PP material, sturdy and durable Product parameters Item: Straight Adapter with Spool and Service Port Cover Material: Stainless Steel and PP Low Side, 1/4 (7/16"- 20) x 13 mm High Side, 1/4 (7/16"- 20 ) x 16 mm c/w Removable spool and service port cover. Product List 1 * Blue low side quick connector. 1 * Red high side quick connector. 1 * 13mm blue cap. 1 * 16mm red cap.