Features: 1It has good sealing performance no air leakage when connected with the cylinder and it is more convenient to use. 2Exquisite workmanship excellent performance stable performance is a very practical accessory. 3The installation method is simple and practical and the old or damaged parts can be replaced directly. 4It is very soft and not easily broken strong and durable in use you can use it for a long time. 5The thread size is W21.8-14 // TR21-4 the refill adapter can be used to refill a small CO2 cylinder from a larger CO2 cylinder. Specification: Item Type: Soda HoseMaterial: Stainless Steel + Aluminum AlloyColor: Black+SilverLength: Approx.91.4cm/36inWeight: Approx.422g/14.9ozTest Pressure (TP): 17000psiWorking Pressure (WP): 6000psiInterface Diameter: 21.8mm/0.86inThread Interface: W21.8-14 // TR21-4Applicable Countries: South Korea Japan Britain Germany France Poland Norway Switzerland Russia Ukraine South Africa Sweden Chile Czech Republic Singapore... (some countries are also called DIN477 /JIS m22-14)How 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 Manual2 x Spacer1 x Gasket1 x Screwdriver Note: 1. The refill adapter can be used to refill a small CO2 cylinder from a larger CO2 cylinder. The refill adapter is W21.814. Make sure that the thread type of the CO2 cylinder is the same.2. This item only applies to gaseous carbon dioxide not liquid carbon dioxide. It can't use siphon carbon dioxide tank!!3. Please do not disconnect the quick disconnect under pressure. The quick disconnect Oring will be blown off. It is recommended to discharge the remaining pressure on the Sodas machine.