1. Used to fill your gas container from bottle. 2. The pipeline adopts high-pressure PU and nylon pipes. 3. Safe and easy to control. 4. The nozzle diameter is 6.5mm<br><br>Usage:1.You need an inflation valve, an empty gas container, a bottle and an electronic scale. 2. Before inflating, please make sure that the connecting valve of the gas cylinder is closed. 3. Connect the cylinder interface to the cylinder, unscrew the cylinder valve, and check whether there is gas escaping. 4. Put the cylinder flat or upside down, connect it to the gas container, put the connected gas container on the scale, and turn on the knob of the cylinder to see the flowing in the pipeline. 5. Please close all valves after inflation. Different factory batches may have slight differences in appearance and color, which not affect the use Color: As Shown Material: Metal<br><br>Package Contents: 1 x charging and discharging valve 1 x conversion head<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.