Specifications: Material: Metal + stainless steel braided tube Total length: 70cm Pipe length: 60cm Weight: Single tube: 128g; Orange adapter: 42; Grey adapter: 31; Black adapter: 14g Usage: 1. You need a inflatable valve, a empty gas container, a liquefied gas cylinder, and a electronic scale. 2.Please make sure that gas container connection valve is closed before gas charging. 3.Connect the liquefied gas cylinder interface to the cylinder, unscrew the cylinder valve and check whether there is gas escaping. 4. Let the liquefied gas cylinder lie down or upside down, and connect to gas container, Put the connected gas container on the scale, open the liquefied gas cylinder knob, then you can see liquefied gas flow in the pipe. 5.After gas charging, please shut all the valves. Note: 1. Gas container not included. 2. Due to differences between different monitors, the image may not reflect the actual color of the item. Due to manual measurement, please allow an error of 0.5-2 cm.