Constructed with high-grade aluminium alloys, the CO2 transfer adapter is firmly built to withstand considerable wear and corrosion. It exhibits remarkable durability, promising long-term functionality and safety in handling CO2. It is an accessory built with excellence to endure extended usage. The adapter features extensive compatibility, fitting perfectly with pink Quick Connect CO2 cylinder systems equipped with quick connection valves (no threads). It works seamlessly with all large CO2 tanks having W21.8-14 threads and only gas cylinders with a backflow lock. like the Duo, Art, Terra, Crystal 3.0, , and E-Duo. Engineered with a pressure relief valve, this CO2 refill adapter takes the challenge out of controlling the switch. Featuring a double seal design, you can use it without worrying about gas leaks. For standard 425gCo2 cylinders, the filling time is around 30-45 seconds. After filling, load measurement enables you to identify if it is completely filled or not. With this handy CO2 refill adapter, refilling your CO2 cylinders has never been easier. Save on cost and effort by refilling your empty CO2 cylinders instead of replacing them, making it an optimal extension for your Terra/Duo/Art water carbonator. The simplified process provides a cost-effective option to reload CO2 tanks. The CO2 refill adapter is user-friendly, requiring only a few straightforward steps to connect to your pink CO2 cylinder. Anyone can easily use it for an efficient and quick inflation. It provides a convenient way of filling your CO2 canister without going to a refill station. Material: Aluminum alloy colour: rose Red Package Contents: 1 x CO2 Refill Adapter 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.