4 in 1 Multifunctional Size Wrench: 1/4 inch, 3/8 inch, 3/16 inch, 5/16 inch. These sizes are the most commonly used wrench sizes when repairing the air conditonnings and refrigeration equipments. Hex Key Adapter: The hex key adapter is made of premium steel with a heat-treated and chrome-plated . The size is 3/16 inch and 5/16 inch, 2 inch long. Wide Application of The Valve Core Remover: Suitable for home refrigeration equipments, dual size sae 1/4 inch & 5/16 inch port makes the valve core remover tool be compatible with R410, R22, R12, R407, R404, R32 A/C air condition system, etc. (Not suitable for Automotive AC) 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 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. Material: Brass Color: As shown The actual product may be slightly different but will not affect the use Package Contents: 1 x Valve Core Remover Tool set 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.