Features: 1Integrated safety pressure valve can fill carbon dioxide into the soda bottle. 2Use CGA320 // TR214 thread tight connection no air leakage. 3The adjustable valve pin ensures compatibility with any cylinder valve. 4Adopts highquality aluminum alloy material good durability and stability. 5CO2 filling adapter with 3000psi pressure gauge safe and reliable. Specification: Item Type: CO2 AdapterMaterial: Aluminum AlloyColor: BlackThread Interface: CGA320 // TR21-4Weight: Approx. 118g / 4.2ozApplicable Countries: The United States Canada Brazil Colombia the Philippines (some countries are also called G1/2-14/0.825-14NGO)The refill adapter can be used to refill a small carbon dioxide tank from a larger carbon dioxide tank. The adapter is American CGA-320 (G1/2). Make sure that the thread type of the carbon dioxide tank is the same.How to Use:1. Use an appropriate wrench to connect the regulating valve to the adapter.2. Hold the cylinder firmly with one hand and fasten the adapter/regulator to the cylinder with a wrench.3. The pin in the adapter will depress the valve on the cylinder and open the gas flow.4. Continue to tighten the adapter on the cylinder. Package List: 1 x Valve1 x Gasket1 x Right Angle Wrench2 x Sealing Ring1 x Screw