Features: 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 all 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. Anti-slip design increases hand friction and prevents all kinds of overpowered valves. Specifications: Color: Gold Material: Brass + Alluminum Alloy Package Size: 14 * 7 * 2cm Package Weight: 195g Package List: 1 * Valve Core Remover 10pcs * 5V1 Valve Cores Instructions: 1. Pull out the dead point on the valve stem, close the valve on the tool, adjust the connection between the tool and the air conditioner interface, and tighten the valve on the air conditioner. 2. Make sure the tool is tightly connected to the air conditioning valve, then open the valve on the tool. Push the stem into the air conditioning valve and gently turn the tail knob of the remover. Find the angle at which the spool is attached and release. 3. After removing the spool, pull out the stem, close the valve on the disassembly device, loosen the screw at the end of the tool and remove the spool. Notes: 1.Please allow 1-3cm differences due to manual measurement. 2.It would be better to close the spool wrench valve and disconnect the internal connection of the air conditioner before removing the spool. 3.Make sure your device interface is 1/4 or 5/16.