?High Quality Material? High Quality Aluminum Alloy And Copper Composition, Strong Corrosion Resistance And Long Service Life. | | ?Free To Use With?These Gas Refill Adapters Kits Can Be Used To Fill Each Other And Collect Into One Gas Tank Through This Valve For Reuse Purposes. This Not Only Saves Fuel And Resources, But Is Also More Environmentally Friendly. | | ?Safe And No Leakage?Our Butane Gas Canister Adapter Has A Self-Locking Function And No Leakage, So You Can Use It Safely. After Connecting The Butane Gas Canister, The Adapter Will Automati