Wide Application: Suitable for home refrigeration equipments, dual size sae 1/4inch & 5/16inch port makes the valve core remover tool be compatible with for R410, R22, R12, R407, R404, R32 A/C air condition system, etc. (Not suitable for Automotive AC) Easy to Install: Use this hvac valve core remover tool, the valve core rod makes it be easily inserted into the inner valve core to control the valve core. you don't need to stop the machine and release the refrigerant. Note: Before removing the valve core, close the valve of the valve core wrench and disconnect the air conditioner inner connection. Upgraded Valve Cores: The bottom of our valve cores are golden yellow, strong resistance to fluorine and heat, has longer service life than ordinary valve cores. Great Design: This hvac tools are mainly made of brass, it has a ball valve that can be opened and closed in just a quarter-turn. (No Gas Loss). Anti- design increase hand friction, prevent all kinds of overpowered valves; High-quality craftsmanship probes, rugged and durable, suitable for most equipments. ality craftsmanship probes, rugged and durable, suitable for most equipment. Please note: There is a slight color difference or discrepancy in kind, please don't mind, thank you! Material: brass colour: As shown Package Contents: 1 x Valve core removal wrench 2 x R410 R32 Brass Adapter 10 x valve core 5 x brass nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.