Bullet Points: 1. Good Safety R12 to R134A retrofits quick change adapter high safety, made of high-quality metal and PP, sturdy construction with high heat Resistant, durability 2. Simple Operation This adapter is easy to operate, the accessory will convert your old 1/4" SAE or 7/16" 20UNF R12 R22 charging port and make it accept R134a quick disconnect 3. Practical Design R12 to R134A retrofits fittings are practically designed, feature an air valve, connect to the thread for use with the valve, have a removable valve, come with a protective cap 4. Easy to Use Low and high-side retrofits adapter fittings are quick and easy to use, with removable American valve, easy to disconnect and connect, and very practical 5. Good Compatibility It can be fully used to replace R12 R22 with R134A charging port 1/4" SAE or 7/16"-20UNF adapter, AC adapter port adapter retrofits r12 to r134a is the perfect air conditioner conversion adapter kit 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.