Perfect Compatibility & Easy Installation: Designed for sparkling water machines including DUO, ART, TERRA, E-DUO/Crystal 3.0/Gaia, this CO2 quick adapter provides a secure connection to standard 60L CO2 cylinders with TR21-4 trapezoidal thread. The 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. Its robust construction and effective sealing performance help protect against oxidation and rust, ensuring long-term reliability. Replaceable Components for Extended Use: The quick-connect fitting includes a replaceable rubber seal. If the seal becomes worn or loose, it can be replaced easily, helping extend the product's lifespan and reduce maintenance needs. Cost-Efficient and Convenient Solution: This adapter allows continued use of existing CO2 bottles without replacing the entire cylinder or appliance, offering a practical and economical alternative. Material: Aluminum alloy Color: Rose Red Package Contents: 1 x CO2 Quick Adapter Note: Other items not included. Due to lighting effects and monitor settings, the actual color may vary slightly from images. Measurement may vary by +/- 1-3 cm.