Upgrade Environmentally Friendly Valve Cores: The bottom of our valve cores are golden yellow, longer service life than ordinary valve cores, strong resistance to fluorine, stronger heat. Easy to Install: The valve core remover installer tool’s core grabber tool makes it be easily inserted into the inner valve core to control the core. No need to stop the machine, no need to release the refrigerant. Wide Application: Suitable for home refrigeration equipment, dual size( SAE 1/4'' & 5/16'' Port ) design makes the valve core remover installer tool be compatible with R22, R12, R407, R410, R404, R32 A/C air condition system, etc. (Not suitable for Automotive AC) Great Design: Durable, solid brass tool has a ball valve that can be opened and closed in just a quarter-turn. (No Gas Loss). Anti-slip design increase hand friction, prevent all kinds of overpowered valves; High-quality craftsmanship probes, rugged and durable, suitable for most equipments. Package Included: 1* Valve Core Remover, 1 *R410 R32 Brass Adapter, 20* Valve Cores, 10* brass nuts.