Safe and durable construction - Made of high-quality metal and PP, delivering strong heat resistance and long-lasting durability for automotive A/C service. Easy port conversion - Converts old 1/4" SAE or 7/16" 20UNF R12/R22 charging ports to accept R134a quick disconnects. - Compatible with R12 and R22 systems while enabling R134a flow through the R134a service port. Detachable valve with air valve - Includes a detachable valve with an integrated air valve. - Threaded for use with the valve and equipped with a protective cap for quick, secure installation. Removable valve - Features a removable valve for easy disconnection and connection, enabling fast, convenient use during service. 2-3 practical use scenarios - Retrofit an older vehicle’s A/C system from R12/R22 to R134a during maintenance or restoration, avoiding outdated port compatibility issues. - Quick-service workflow in auto repair shops when servicing vehicles with mixed refrigerant ports, reducing downtime. - Suitable for retrofits in RVs or other equipment that use R12/R22 ports, enabling modern R134a compatibility without complete system replacement.