[Quick Connection]: This quick connection hose has an inner diameter of M8, which can be used for quick connection of water and gas between the welding torch and the welding socket [Firmly Tightened and Not Easy to Leak]: The thread of this connector fitting can be tightly connected, firm, which can effectively prevent leakage [High Quality Brass]: These gas quick connect fittings are made of high quality brass, which has good wear resistance and long service life [Easy to Install]: This welding gas adapter is easy to install and can be installed quickly without other tools [Wide Application]: This water gas connection fitting can be used for MIG TIG welding torches, low pressure natural gas Delivery Quantity: 4pcs Welcome to meet