About this itemThis adapter Z24 can let you use one isobutane gas canister(with EN417 Lindal Valve) for two devices at the same time.BUILT-IN CHECK VALVE:Equipped with check-valve (self-sealing valve), therefore it won't leak when connect it to gas canister.(Note: Please remove the adapter from the canister after using.)DIMENSIONS:5.3"x1.2"x1.1" / 13.5cmx3cmx2.7cm; WEIGHT:2.5oz / 70gInlet : EN417 Lindal Valve CanisterOutlet(two) : EN417 Lindal Valve (male thread)★If you want to use this adapter with 16oz/1lb propane tank, you also need adapter Z22. Product Dimension: 13.5 X 3.0 X 2.7 cm | 5.3 X 1.2 X 1.1 in Weight: Power: N/A Volume: N/A Group Size: N/A Materia: Super Duralumin, Stanless Steel, Rubber, Brass Fuel Type: N/A Fuel: Propane Fuel Regulator: N/A Auto Ignition: N/A Number of Burners: N/A Average Boil Time (1L): N/A