1. Quickly and easily replace leaking valve cores, remove and install valve cores without losing refrigerant. 2. Used to remove and install valve cores in live systems. Quickly and easily replace leaking valve cores. 3. Dual size, used for R410a or R22 charging system or other modification and replacement system. 4. The valve core remover installation tool is made of solid brass, which is durable and not easy to rust; the metal knob is designed with anti-slip knurl, which is durable and can be used for a long time. 5. Coring tool makes it easy to insert the inner valve and control the core without shutting down or releasing refrigerant. It is convenient to remove and install the valve core, saving hours of emptying and filling time. 6. Material: copper + plastic
