1、1 meter soda tube, uses high‑quality stainless steel + copper material, durable and corrosion‑resistant. 2、Good sealing performance, no air leakage when connected with the cylinder, more convenient to use. 3、The thread size is W21.8‑14 // TR21‑4, the installation method is simple and practical. 4、Perfect for refilling carbon dioxide cylinders, with stable performance and long service life. 5、Practical soda accessories, exquisite workmanship, easy to assemble and connect. Item Type: Soda Hose Material: Stainless Steel + Copper Color: Silver Length: Approx. 1m / 3.3ft Working Pressure: 1500psi Interface Diameter: 21.8mm / 0.86inThread Interface: W21.8-14 // TR21-4 Weight: Approx. 315g / 11.1oz Applicable 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) Refilling adapter can be used to replenish a small carbon dioxide tank from a larger carbon dioxide tank. The supplementary adapter is W21.8-14. Make sure that the thread type of the carbon dioxide tank is the same. 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 of the large gas bottle 5. After completion, you can use soda machine If you want to unscrew items from the machine: 1. Close the large gas cylinder valve 2. Press the button of the soda machine to discharge 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 connector 4. Unscrew the pin valve on the soda machine and unscrew the nut on the CO2 cylinder 1 x Soda Hose 1 x Manual 2 x Gasket 1 x Washer