Save Fuel. With this backpacking stove adapter, you can use cheap, nozzle bottle type butane canisters to cut the cost, compare with the flat shaped camping fuel canisters that cost much. It is the good way to cut costs and size to your cooking setup. It can be used for the Nozzle Bottle Type gas tank to connect the stove, specific canister type like shown in the picture. Easy to Use. It's easy to use. With automatic shut-off function, no gas leakage when not connecting the stove. The adapter will automatically turn off if the stove does not connect. Attention Please. This adapter is used for butane canisters like shown in the pictures. NOT suitable for the green 1 lb propane canisters. It is used for long butane cans that be converted to Lindal type valve. Convenient for your outdoor camping, barbecue party or outdoor picnic. How to Use. Insert the plastic tab into the fuel canister notch, lock the adapter onto the top of the canister. After fitting the butane adapter to the fuel canister frame, twist the metal portion of the adapter clockwise and lock it in place. Portable & Lightweight. Made of high quality copper and aluminum alloy material, which makes the stove adapter corrosion resistant and durable for long time use. Weight only 45.3g/ 1.6oz. Used it to connect to a butane cylinder. Allows you to use much cheaper butane cylinders. Give you more choices for outdoor camping.