MaterialMade of aluminum copper alloy and high temperature resistant nylon, very sturdy and durable, won't peel off. Intermediate valve body made of brass, good workmanship.Easy to use The gas cartridge adapter is designed to connect standard flat ovens and long tanks, allowing you to use a economical butane tank for your camping stoves.Safe and easy to controlThe outdoor gas canister adapter has an automatic shut-off function; when connected to a long gas cylinder, there is no leakage even if it is not connected to the oven.Ideal accessoryIt is lightweight and portable, easy to carry and store, suitable for split type oven, convenient to use. The gas burner adapter is suitable for outdoor camping burners, hiking, picnic burner, hunting and other outdoor activities.Scope of delivery : 2 adapters for gas bottle. You can connect an outdoor oven with screw valve and cheaper nozzle bottle.