Welcome to the store! 1、The refill adapter can be used to refill a small carbon dioxide tank from a larger carbon dioxide tank. 2、Practical soda accessories, exquisite craftsmanship and corrosion resistance. 3、It is very soft, not easy to break, strong and durable, and can be used for a long time. 4、It is very easy to install and requires no special installation experience or skills. 5、Easy to use and can connect a carbon dioxide tank to a soda machine, which is very useful. Item Type: Soda Hose Material: Stainless Steel + Brass + PTFE Color: As shown in the picture Length: Approx. 61 cm/24 inches Weight: Approx. 539 g/19 oz Thread Interface: G5/8-14 // TR21-4 How to use: 1. Screw the pin valve into the soda machine 2. Screw the nut onto the carbon dioxide cylinder and tighten it with a wrench 3. Connect the quick connector 4. Open the valve on the gas cylinder 5. After finishing use, you can use the soda machine. If you want to unscrew items from the machine: 1. Close the atmospheric cylinder valve 2. Press the button on the soda machine to empty the remaining carbon dioxide (if you do not disconnect the connector according to this guide, the quick connector o-ring will blow off) 3. Disconnect the quick connector 4. Unscrew the pin valve on the soda machine and unscrew the nut on the CO2 cylinder 1 x Soda Hose 1 x User Manual 3 x Gasket Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!