Time saving valve core installation: handles valve cores efficiently to install quickly with no refrigerant loss, significantly shortening time while keeping a secure connection throughout the process. Easy to use and portable: designed with an antislip handle grip for improved control, it fits neatly into any car toolbox and supports smooth onehanded operation for mobile, onsite repairs with straightforward usability. Pressure stability during service: safeguards automotive AC cooling units by maintaining stable pressure, lowers the risk of seal failure, and allows safe disassembly without leaks or damage. Multi purpose and compatible: suitable for scheduled servicing and adaptable module replacements, performs well across different scenarios, and integrates with standard automotive AC systems for rapid problem solving. Practical use scenarios: • Onsite roadside or customerlocation AC service: quickly install or valve cores without refrigerant loss, reducing downtime while maintaining a secure seal. • based vehicle maintenance: use during scheduled servicing and module replacements on vehicles with standard AC systems for efficient problem resolution. • Mobile tasks in fleet or homegarage setups: compact tool enables effective field repairs and quick turnarounds with onehanded operation and easy transport.