WADEO Valve Core Remover Tool and HVAC Service Wrench Set with Hex Bit Adapter, Dual Size SAE 1/4 & 5/16 Port, 10 PCS Valve Cores with Teflon Seal, 5 PCS Brass Nuts for HVAC Equipments Repair - IT0387+IT0388-MDUS

• 4 in 1 Multifunctional Size Wrench: 1/4", 3/8", 3/16", 5/16". 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 surface. The size is 3/16" and 5/16", 2 inch long. Wide Application of The Valve Core Remover: Suitable for home refrigeration equipments, dual size sae 1/4'' & 5/16'' 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. if you have any questions, please feel free to contact us. If there is a quality problem within one year, you will get a replacement or even a refund.