High-Quality Zinc Alloy Material: The hose quick release gas connector is made of high-quality zinc alloy material, with good wear resistance, sturdiness and durability, and good stability. The galvanized surface treatment can prevent rust and corrosion, and at the same time has a metallic luster and a smooth texture. Easy to Use: The nozzle coupling connector is easy to use. All you have to do is slide the collar back and insert the accessory, and then slide the collar completely back to lock it in place. Prevent Air Escape: The quick-release copper nozzle coupling used on the compressor side has a built-in shut-off valve to prevent air leakage when the nozzle is disconnected or when tools are changed. The safety performance is good, please rest assured to use. Wide Range of Applications: These gas hose copper nozzles are very suitable as hose assemblies for barbecues, camping, cooking utensils, and patio heaters. They are also suitable for use in motorhomes and caravans. The operation is simple and fast, which brings many conveniences to your outdoor travel.