Material: aluminum alloy shell, light weight, good strength and good corrosion resistance. In order to prevent corrosion, a dense oxide film is formed on the surface of the aluminum alloy. Size and weight: the size of this adapter is 55 x 55 x 30 mm , and the weight is 42 g. The product is small in size and very convenient to carry outdoors. It is one of the best options for camping tools. Features: The unique metal bracket of the product can play a supporting role, and it will make the gas tank not easy to roll. There is a locking device in the valve device, which can be directly connected to the gas tank, the adapter interface thread design has a very good sealing. use: insert the plastic tab in the notch of the fuel container, lock the adapter on the top of the container. After installing the butane adapter onto the frame of the fuel canister, turn the metal part of the adapter clockwise and lock it in place. Attention: this adapter is used for butane cylinders. It cannot be used on 1 lb green propane canisters. It is used for long butane canisters which can be converted into a Lindal type valve. Convenient for your outdoor camping, barbecue or outdoor picnic.