Outdoor Camping for Gas Butane Cylinder Tank Refill Connector Adapter ValveDesigned to recharge refillable butane cylinder Convenient and portable to useSuitable countries: steps and precautions (note that the operation of is dangerous, Be to operate in an open outdoor place, and operate carefully):1. Install the empty of the cassette gas tank on the valve.2. Make to the valve switch tightly.3. Put the cylinder that meets standard on a stool or other stable table with a height difference of more than 20cm (make the switch of the cylinder is closed)4. Install the 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 valve to start ( control the time, and never overcharge. The 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 , first turn off the switch of the cylinder, then turn off the switch of the valve, and then remove the valve and the cassette gas tank in turn.colour: goldMaterial: copper+zinc ironSize: about 11.5x11CMPackage Contents:1 x Refillable AdapterOnly 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.