High-quality zinc alloy material: The gas hose quick connector is made of high-quality zinc alloy material, with good wear resistance, robustness and durability, and good stability. The galvanized surface treatment prevents rust and corrosion, and at the same time has a metallic luster and a smooth texture. Easy to use: The nozzle connector is easy to use. All you need to do is push back the collar and insert the accessory, then push back the collar completely to lock it in place. Prevent air leakage: The copper quick connector 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, use it with confidence. Wide range of applications: These copper gas hose nozzles are very suitable as hose connections for grills, camping, kitchen utensils and patio heaters. They are also suitable for use in RVs and caravans. The use is simple and quick, which provides many conveniences for your outdoor trips. Hose nozzle set at a good price: The set includes 4 hose nozzles, 2 nozzle connectors and 2 nozzle sockets (specification: common SH-20, common PH-20), nozzle diameter: 8 mm. Before buying, please confirm the applicable size.