Premium Materials: The Hose Connector Kit is made of copper. Excellent strength and durability, high thermal ductility and low permeability. It provides a tight connection to your pipe system. Leakage PreventionThe yellow copper pipe fitting is barb type, easy to install, and the pipe is connected with the hook, which makes the hose fitting tighter and not easy to leak and disconnect, strong and reliable. Easy Installation 1/2 hose fitting easy to install. When connecting, you just need to insert the retaining hook into the pipe. make the installation steps easier, no further cutting or drilling is required. Package includes: 12 pack outer and inner threaded fittings, pipe inner diameter is 8mm, 10mm , 12mm. A wealth of features are available for your use in different situations, which is very convenient. Widely Spread1/2 pipe fitting is suitable for transporting and connecting air, water water, oil, gas, liquid or fuel. Can also be used for washing machines, balcony drains, toilets, garden irrigation, fertilization and much more.