Outdoor Camping for Gas Butane Cylinder Tank Refill Connector Adapter Valve Designed to recharge refillable butane cylinder easily Convenient and portable to use Suitable countries: Inflation steps and precautions (note that the operation of is dangerous, Be sure to operate in an open outdoor place, and operate carefully): 1. Install the empty bottle of the cassette gas tank on the inflation valve. 2. Make sure to close the inflation valve switch tightly. 3. Put the cylinder that meets standard upside down on a stool or other stable table with a height difference of more than 20cm (make sure the switch of the cylinder is closed) 4. Install the inflation valve with the cassette air tank on the cylinder. 5. After placing it steadily, turn on the switch of the cylinder, and then turn on the switch of the inflation valve to start inflation (please control the inflation time, and never overcharge. The inflation capacity of the cassette gas cylinder is generally recommended to be within 180 grams, approximately After filling for a while, the gas tank can be removed and weighed to confirm whether the weight of the gas tank is too high). 6. At of inflation, first turn off the switch of the cylinder, then turn off the switch of the inflation valve, and then remove the inflation valve and the cassette gas tank in turn. colour: gold Material: copper+zinc iron Size: about 11.5x11CM Package Contents: 1 x Refillable Adapter Only the above package content, other products are not included. Note: Light 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.