Perfect Compatibility & Easy Installation: Designed for sparkling water machines including DUO, ART, TERRA, E-DUO, Crystal 3.0, and Gaia, this CO2 quick adapter provides a secure connection to standard 60L CO2 cylinders with TR21-4 trapezoidal thread. Its split design enables simple installation without removing the machine base or causing damage. Durable Material & Reliable Performance: Made from high-quality aluminum alloy, the adapter offers excellent corrosion resistance and durability. It features strong construction and effective sealing to resist oxidation and rust, ensuring long-term, reliable operation. Replaceable Components for Extended Use: The quick-connect fitting includes a replaceable rubber O-ring. If the ring becomes worn or loose, it can be easily replaced, enhancing longevity and minimizing maintenance needs. Cost-Effective and Convenient Solution: This adapter allows you to use a compatible CO2 cylinder without replacing the entire system, helping save time and reduce expenses. Material: Aluminum alloy Color: Rose Red Package Contents: 1 x CO2 Quick Adapter Note: Other items not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement may vary by +/- 1-3 cm.