Name: extension tube Material: Steel + Copper Color as shown Size: About: 30cm Weight: 107g Usage: connect side gas stove valve Connect gas tank side The package includes: 1 piece tube with bag Features: This propane filling adapter is specially designed Russia, Germany, Ukraine, Kazakhstan, Belarus and European countries. You can use safe and easy control liquefied gas cylinders fill flat gas containers. How to use: 1. You need an inflation valve, an empty flat gas container, a liquefied gas bottle and an electronic scale. 2. Please make sure that the connection valve of the flat air tank is closed before inflating. 3. Connect the liquefied gas cylinder interface to the cylinder, unscrew the cylinder valve, and check gas leakage. 4. Lay the liquefied gas bottle flat or upside down, connect the flat gas bottle, put the connected flat gas bottle the balance, open the button of the liquefied gas bottle, and you can see the liquefied gas flowing inside the pipeline. 5. After inflation, please close all valves. Using this adapter, refill your flat fuel tank. Package Included: 1*Air valve adapter