Features: 1Scope of Application: The CO2 quick adapter is specifically designed for all 60L CO2 cylinders with a TR21 4 male valve connected to the soda maker. 2Warm Tip: Using a CO2 quick adapter the bottle will take a long time to insert so it is necessary to remove the base of the 60L CO2 bottle from the for terra for art for duo soda maker and then insert the bottle. 3Applicbale Model: The CO2 quick adapter upgraded for soda water bubbler is compatible for DUO for Terra for Art soda maker. It is an adapter that can connect a soda maker to a blue carbon dioxide bottle. 4Premium Material: The CO2 quick adapter is made of aluminum and brass material which is corrosion resistant antioxidant rust resistant durable safe has a polished surface and good sealing performance. 5Convenient To Use: With this CO2 quick adapter upgraded for soda water bubbler you can decide for yourself which carbon dioxide cylinder to use with your soda maker. 6Convenient To Connect: You can also use this CO2 quick adapter for soda water bubbler to connect the old soda hose with TR21 4 male thread to the soda maker. Specification: Item Type:CO2QuickAdapterUpgradedforSodaWaterBubblerProduct Material: Aluminum BrassWeight: Approx. 53g / 1.9ozThread: TR21 4Thread Package List: 1 x Adapter2 x Gasket