COMPATIBILITY: The CO2 Soda Adapter is compatible with DUO, ART, and TERRA, and fits standard CO2 bottles with traditional TR21-4 trapezoidal threads. Holds up to 60L and 425g CO2 bottles, you can keep using traditional CO2 bottles and drink soda now. After installation, you can now also use CO2 cylinders from previous versions.Upgraded Co2 adapter, easy to install, you don't need to disassemble the carbonated water machine, no matter duo, art or terra model. You no longer have to worry about the machine being damaged.This CO2 adapter is made of strong and ultra-light aluminum alloy, tightly sealed, environmentally friendly, strong, high safety, rust-proof and durable.Economical: With this quick adapter, you can use your carbon dioxide cylinder to use your new carbonated water dispenser. After installation, you can now also use CO2 cylinders from previous versions.Color: FuchsiaMaterial: aluminum alloyPackage Contents:1 x CO2 Quick AdapterOnly 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.