Feature: 1. Integrated CO2 refilling connector makes it easy to fill carbon dioxide into the soda bottle. 2. The adjustable valve ensures compatibility with any cylinder valve changes. 3. Good airtightness, no gas leakage, easy to use and connect, long service life. 4. Safety pressure valve, adopts CGA320 // TR21‑4 threaded connection, which is safe and durable. 5. Selected high‑quality aluminum alloy materials, wear‑resistant and corrosion‑resistant. Specification: Item Type: Soda Valve Material: Aluminum Alloy Color: Black Weight: Approx. 96g / 3.4oz Interface Diameter: 20.8mm / 0.8in Thread Interface: CGA320 // TR21-4 Applicable Countries: The United States, Canada, Brazil, Colombia, the Philippines (some countries are also called G1/2-14/0.825-14NGO) How to Use: The refill adapter can be used to replenish 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. . Package List: 1 x Soda Valve