Features: 1The refill adapter can be used to replenish a small carbon dioxide tank from a larger carbon dioxide tank. 2It is very soft not easy to break strong and durable and can be used for a long time. 3It is very easy to install and does not require any special installation experience or skills. 4Practical soda accessories exquisite craftsmanship and corrosion resistance. 5Adapter for soda maker external CO2 tank adapter and hose with G5/8-14 // TR21-4 connector. Specification: Item Type: Soda HoseMaterial: Stainless Steel + Brass + PTFEColor: As shown in the pictureLength: Approx.91.4cm/36inWeight: Approx.563g/19.9ozThread Interface: G5/8-14 // TR21-4How to Use:1. Screw the pin valve into the Soda machine2. Screw the nut onto the carbon dioxide cylinder and tighten it with a wrench3. Connect the quick connector4. Open the valve of the gas cylinder5. After completion you can use the Soda machine.If you want to unscrew items from the machine:1. Close the atmospheric cylinder valve2. Press the button of the Soda machine to discharge the remaining carbon dioxide (if you do not disconnect the connector according to this guide the o-ring of the quick connector will blow off)3. Disconnect the quick connector4. Unscrew the pin valve on the Soda machine and unscrew the nut on the CO2 cylinder Package List: 1 x Soda Hose1 x Instruction Manual3 x Gasket Note: 1. This item only applies to gaseous carbon dioxide not liquid carbon dioxide. It can't use siphon carbon dioxide tank!!2. Please do not disconnect the quick disconnect under pressure. The quick disconnect O‑ring will be blown off. It is recommended to discharge the remaining pressure on the Soda machine.