This brass coupling provides a secure connection between a 4 mm ID hose and a port with M14x1.5 metric female threads. Made from brass, it delivers reliable durability and corrosion resistance for use with water, gas, and oil lines. The 4 mm hose barb accepts standard 4 mm ID hoses and allows for a tight seal when secured with a hose clamp. This unit is sold as a single piece. Key attributes Functionality: Brass hose barb coupling with M14x1.5 female thread and 4 mm hose barb Compatibility: M14x1.5 female threaded port; suitable for 4 mm ID hoses Size: 1 piece; hose barb diameter 4 mm; metric thread M14x1.5 Material: Brass; corrosion resistant; durable for water, gas, and oil line applications Performance: Provides a secure, leakresistant connection when used with appropriate clamps and sealant on mating threads What's included 1 x brass M14x1.5 female thread to 4 mm hose barb coupling installation notes Ensure the mating port is clean and of debris For threaded connections, apply appropriate thread sealant or PTFE tape to the mating male threads Secure the 4 mm ID hose with an appropriate hose clamp to achieve a tight seal Applications and use cases Water lines: Connect a 4 mm ID hose to a component or manifold with an M14x1.5 female port in small domestic or DIY water systems Gas or oil lines: Attach a 4 mm ID hose to equipment that uses an M14x1.5 female thread for fluid or gas transfer General fluid transfer in small assemblies: Suitable for lightweight oil or other noncorrosive fluids in hobbyist projects, work, or prototyping Notes This product is designed for general purpose connections and should be used in accordance with all applicable safety and compatibility guidelines for water, gas, and oil systems Verify hose ID, barb size, and thread compatibility before installation to ensure proper fit and performance