Perfect Compatibility & Easy Installation: Designed for sparkling water machines such as DUO, ART, TERRA, E-DUO/Crystal 3.0/Gaia, this CO2 quick adapter provides a secure connection with standard 60L CO2 cylinders featuring TR21-4 trapezoidal thread. The split design allows for easy installation without removing the machine base or causing damage. Durable Material & Reliable Performance: Made from high-quality aluminum alloy, this CO2 adapter offers excellent corrosion resistance and durability. Its robust construction and reliable sealing performance help protect against oxidation and rust, ensuring long-term use. 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 reducing maintenance needs. Cost-Effective and Convenient Solution: This adapter allows you to continue using your existing CO2 cylinder without replacing the entire tank or appliance, helping save time and reduce costs. Material: Aluminum alloy Color: Rose Red Package Contents: 1 x CO2 Quick Adapter Note: Light reflection and differences in display settings may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.