General description The 12 pieces 1/2 inch hose screw connection set includes connectors with external and internal threads, designed for air hoses, gas hoses, and water pipes. Made from premium yellow copper, these fittings offer excellent strength, durability, and leak prevention, ensuring a tight connection to your pipe system. Technical specifications Material: Copper Inner diameter of pipes: 8 mm, 10 mm, 12 mm Type: Barb type connectors Installation Easy to install: Simply insert the retaining hook into the pipe. No cutting or drilling required for installation. Usage Suitable for transporting and connecting air, water, oil, gas, liquid, or fuel. Can be used for washing machines, balcony drains, toilets, garden irrigation, fertilization, and more.