Perfect Compatibility & Easy Installation: Designed for compatibility with devices such as DUO, ART, TERRA, and E-DUO/Crystal 3.0, this CO2 quick adapter enables a secure connection to standard 60L CO2 cylinders with TR21-4 trapezoidal thread. Its split design allows for simple installation without the need to remove the machine base or cause damage. High-Quality Material & Reliable Performance: Constructed from premium aluminum alloy, this CO2 adapter offers excellent corrosion resistance, as well as resistance to moisture and heat. Its durable build and reliable sealing performance provide protection against oxidation and rust, ensuring long-term use. Replaceable Components for Extended Use & Lower Maintenance: The quick-connect fitting includes a replaceable rubber O-ring. If the ring becomes worn or loose, it can be easily replaced, enhancing the adapter’s lifespan and reducing maintenance needs. Cost-Effective & Time-Saving Solution: This CO2 quick adapter allows continued use of existing CO2 bottles without replacing the entire cylinder or heating system, helping save both time and money. Material: Aluminum alloy Color: Rose Red Package Contents: 1 x CO2 Quick Adapter Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display settings may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.