1. Used as a connector for gas cylinder with welding torch.2. Convert the flat gas canister for coleman 1L gas .3. Made of aluminum alloy, strong and .4. Multi-function and convenient gas adapter.Specification:Color: BlackMaterial: Aluminum Alloy , CopperLength: 2.6cm / 1inDiameter: 3cm / 1.2inWeight: Approx. 39gPackage List:1 * Gas Adapter(Only the adapter)