fuel canister refill adapter set is made of high quality copper and aluminum alloy, sturdy and durable, not easy to Butane canister refill adapters have self-lock function. If camping stove not connected, the adapters will automatically, which can your safety. With premium sealing gasket, the gas refill adapter can effectively prevent gas from leakageAll of these gas refill adapters can be and smoothly opened and closed to connect small gas tank, which are convenient for outside camping and picnicWide Application: This refill adapter set is suitable for split type camping gas tank, and perfect gift or who like camping, BBQ party, outdoor picnic or outdoor . They can be placed in your travelling backpack or camping bagColour:Black+orange+silverMaterial:Aluminum Alloy+ CopperPackage Contents:1 x butane canister converter1 x propane to butane adapter1 x gas refill adapterOnly 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.