Wide Application: Suitable for home refrigeration equipment, dual size SAE 1/4 inch & 5/16 inch port makes the valve core remover tool compatible with R410, R22, R12, R407, R404, R32 A/C systems, etc. (Not suitable for Automotive AC) Easy to Install: Use this HVAC valve core remover tool; the valve core rod allows easy insertion into the inner valve core for control. No need to stop the machine or release the refrigerant. Note: Before removing the valve core, close the valve using the valve core wrench and disconnect the air conditioner inner connection. Upgraded Valve Cores: The bottom of our valve cores is golden yellow, offering strong resistance to fluorine and heat, providing longer service life compared to ordinary valve cores. Great Design: This HVAC tool is mainly made of brass and features a ball valve that can be opened and closed with a quarter-turn (No Gas Loss). Anti-slip design increases hand friction and prevents over-tightening; high-quality craftsmanship, rugged and durable, suitable for most equipment. Please note: There may be a slight color difference due to lighting and display variations; this is not a defect. Thank you for your understanding. Material: Brass Color: 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 is included; other items are not part of this package. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3 cm.