Feature:Fits Perfectly - Fits tight to the butane cylinder once you turn the knob and easy to screw into the stove. Just make certain you have the adapter in the loose position and determine how it tightens before placing it on the fuel cylinder.Partner for Outdoor Activities - These Camping Gas Adapters are lightweight and portable. Great accessory for outdoor activities like camping, picnic and BBQ. Suitable for split type furnace.Auto-Off Functional - With the automatic off function. It wont leak even the stove is not connected when connected to the long tank gas cylinder.Size of the Adpter - The outer diameter of the Camping Gas Adapter is approx. 4cm. The inner diameter of the Camping Gas Adapter is approx. 1.1cm (The hole to connect the tube).Premium Material - Made of quality aluminum and copper with high temperature resistant performance. 2 Pack for your convenience.Specification:Material: Aluminum CopperColor: GoldenDimenssion:Outer Diameter: 4cmInner Diameter: 1.1cm (The hole to connect the tube)Feature:1.Lightweight and easy to carry.2.Great accessory for camping, picnic and barbecue.3.Auto-Off function.4.Suitable for split type furnace.5.No leakage.Package Includes:2 x Canister Head Adapter (Gold)