Function: Can be used to replace long gas containers with flat gas containers, saving cost. Material: Made of high temperature resistant aluminum, copper and nylon. Sealed design, safe and durable. Size: 28 x 38mm / 1.1" x 1.5". Suitable for cracking ovens, safe and easy to control. Safety function: sealed on the adapter, with automatic closing function. Automatically shuts off when the oven is not connected, don't worry about leaks. Performance: lightweight and easy to carry. Great accessories for camping, picnics, barbecues, etc. This item is a gas cylinder adapter which is mainly made of aluminum, copper and high temperature resistant nylon. Wide range of accessories for outdoor camping, picnics, barbecues, etc. The automatic lock function, when connected to the long tank gas cylinder, will not leak if the stove is not connected. The functions Dimensions: 38 x 28 mm (diameter * height). Material: aluminum + copper + high temperature resistant nylon. The automatic locking function, when 'It is connected to the long tank gas bottle, will not leak if the stove is not connected. Note: The bottle gas tank and cooker gas tank are not included here. Package Consist Of 3*Bottle Adapter the gas