COMPATIBILITY -- This R134A self-sealing dispensing valve bottle opener fits for a self sealing 1/2" ACME right hand thread for use with most R134A self-sealing/reusable designed cans. Please note there are two kinds for self-sealing can taps, R134A and R1234YF can tap, R134A self-sealing can tap with right hand threaded, but R1234YF self-sealing can tap with left hand threaded. Please check your can before purchase. THREAD -- R134A valve can tap connecting thread 1/4 SAE Male, interface thread 1/2 ACME right hand female thread. EASY INSTALLATION -- Aupoko R134A self-sealing valve can tap is designed with safety check valve, and easy to open R134a self-sealing can with valve to turn off to reserve for future use. PREMIUM QUALITY -- The R134A self sealing can adapter is made of aluminum alloy with heavy-duty construction, with gasket protected to prevent leaks for durable use. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions., Manufacturer: Aupoko