Features: A connector adapter switch R12, R22, R502 screw interface into R134A fast connector interface. Easy to be installed, save time and effort, can be supported used with valve by screw connection. High temperature resistance, rustproof, long lifetime. Specifications: 100% brand new and high quality Material: Brass alloy Working pressure: 1.6MPa~3.2MPa. Temperature: 15~80 Centigrade Length: 1inch Max. Internal Thread Type: 1/4" SAE Female Thread Min. Internal Thread Type: 8v1 Female Thread Outer Thread: Low Pressure 13mm R134A Quick Coupler Package included: 1Pc x R12 to R134A Conversion Adapter Valve. .