CO2 Quick Connect Adapter Quick Disconnect for Sodastream DUO Terra Art Soda Machine To Bubbler Tr21-4 Cylinder Tank Convertor _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ CO2 Adapter Accessories Brass CO2 Quick Connect Adapter Quick Disconnect for CO2 Cylinder Soda Water Bubbler DUO Terra _x000D_ _x000D_ _x000D_ Feature: _x000D_ 1. Wide Compatibility: Compatible with many common CO2 steel cylinders featuring the traditional TR21-4 trapezoidal thread. After installation, you can now use your old CO2 cylinders for Water Bubbler DUO, Art, and Terra. Expand the options for your carbonation needs. _x000D_ 2. Rustproof and Durable: This CO2 adapter is made of sturdy and ultra-lightweight brass and aluminum alloy, ensuring high-quality materials, excellent sealing, eco-friendliness, sturdiness, high safety, rust resistance, and durability. It will last through many carbonation sessions. _x000D_ 3. Easy Installation: One side of the CO2 adapter accessories connects for Water Bubbler Duo, while the other side connects to a 60L CO2 cylinder with a TR21-4 thread. You need to remove the pink part at the bottom of the device (pull out the pin) first. For DUO/ART machines, you may need to trim off a small piece of the casing to insert the bottle into the compartment. _x000D_ 4. More Efficient and Cost-Effective: By using this CO2 quick connect adapter, you can continue using your existing CO2 gas cylinders, eliminating the hassle and cost of replacing cylinders at the store. Now you can also use older versions of CO2 steel cylinders. Save time and money while enjoying your favorite carbonated beverages. _x000D_ 5. Important Note: Please ensure that the valve on your CO2 steel cylinder is original (not Quooker) to ensure a proper fit. Otherwise, the soda quick connector might not tighten sufficiently and may not work with newer Soda machines. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Specification: _x000D_ Origin: Mainland China _x000D_ Type: Hand Tool Parts _x000D_ Material: Aluminium-copper Alloy _x000D_ Material: brass + aluminium alloy _x000D_ Size: 37x36mm/1.46x1.42inch _x000D_ _x000D_ _x000D_ Note: _x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x000D_ Please allow 1-2cm measuring deviation due to manual measurement._x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ 1 x Adaptor _x000D_ 2pcs x Washers _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_