This Stove connector provides continuous gas supply to your stove, do not frequently replace your gas tanks, so that to lower cost and long time using. With the automatic closing function, each adapter independently supplies gas to outdoor stove.When connected to the long gas canister, it won"'"t leak though stove is not connected. Great accessory for outdoor camping burners, picnic burners, etc. Features: 3 in 1 adapter provides continuous gas supply to your stove, do not frequently replace your gas tanks. Premium aluminum alloy and stainless steel material, durable and practical. Stainless steel bracket design for stable support. Dust cober to threaded adapter with good protection. Light weight, easy to carry. Extension Hose: Increases the distance between your stove and your gas tank Specification: Material: Aluminum Alloy Size: see picture Type: Z31 (alpine style): 1 to 3 flat gas adapter, it can be side output, one tank of alpine gas supplies three stoves or lamps, it can be used upside down Z36 (propane style) : 1 to 3 propane adapter, it can be side output, one tank of propane gas supplies three stoves or lamps Z17(Extension tube 100cm) : Increase the distance between the furnace and the gas tank, and use high-pressure pipes, which are more convenient and safe to use Material:Two ends of 7075 aluminum parts + stainless steel, surrounded by high pressure rubber tube jacket steel wire Applicable gas tank: butane gas, alpine gas, propane gas Z16(Extension tube 50cm) : Increase the distance between the furnace and the gas tank, and use high-pressure pipes, which are more convenient and safe to use Material:Two ends of 7075 aluminum parts + stainless steel, surrounded by high pressure rubber tube jacket steel wire Applicable gas tank: butane gas, alpine gas, propane gas Note: The nozzle gas bottle and gas tank stove are not included here Please allow minor error due to manual measurement. pls make sure you do not mind before you purchase. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!