Features: 1Applicable: The soda machine adapter is an adapter connecting soda machine and carbon dioxide cylinder that is applicable for DUO for Terra for Art. 2Anti Rust Anti Corrosion: Made of premium brass aluminum rubber ASA and copper this soda machine quick connector is resistant to corrosion oxidation rust durable and safe. 3Rubber Ring: Quick CO2 refill adapter for soda comes with a rubber ring to eusure better sealing performance more efficient and safe to use. 4Thread Interface: Large CO2 tank thread CGA320 or 0.82514NGO (TR21 4 and G1/2 in the United States). Install and use according to the thread specification. 5Quick Connection: This adapter is easy to install that only with just a few simple steps your carbon dioxide soda machine can use this quick adapter. Specification: Item Type: Soda Water AdapterMaterial: Aluminum rubber ASA copperGross Weight: 223g / 7.9ozApplicable Models: for DUO for Terra for ArtThread Interface: Large CO2 tank thread CGA320 or 0.825-14NGO (TR21 4 and G1/2 in the United States)Applicable Countries: Applicable to the United States Canada Brazil Colombia and the Philippines Package List: 1 xConnector Adapter1 x RubberRing2 x Washer1 x Manual