Feature: 1. Smart Removal: The core removal tool can be easily inserted for control. No need to stop the machine, no need to release the refrigerator. 2. Better Design: Comes with dual sizes, 1/4in and 5/16in, suits perfectly for both fixed frequency system and frequency conversion system. 3. Reliable Work: Spring design makes it work more effortlessly. There is a ball valve that opens and closes in a quarter turn instead of a stem valve. Replace damaged leaking valves without losing charge in conditioning systems. 4. Wide Matching: Applicable to R22 R12 R407c R410A R404A R32 R600 A/C, meeting your various working and maintenance needs. 5. Good Material: Made of thick brass, has non slip knobs, easy to operate and install, strong sealing, durable, safe and reliable. Specification: Item Type: Valve Core Remover Material: Brass Port Size: 1/4in, 5/16in Application: For R22 R12 R407c R410A R404A R32 R600 A/C. Package List: 1 x Valve Core Remover1 x Accessory Note: Before removing the valve core, close the valve core wrench valve and disconnect the internal connection of the air conditioner.