Review on 🔧 9M9 Valve Core Remover Installer Tool: SAE 1/4 & 5/16 Port for HVAC A/C - Includes 4 PCS Valve Cores with Teflon Seal (No Gas Loss) by Zachary Greene

This product may work well but will not fit high and low side AC outlets on 90% of cars. I bought it by mistake because it is said to be able to be used with the R124 refrigerant which is standard on most cars built in the last 20 years. (at least since 2004). I suspect this tool is mostly useful for personal or commercial AC applications. Most cars have "lift and clamp" type connectors. You can't use this without adapters, which come with the exact same tool but cost about $6 more.