APPLICATION RANGE: Brass Hose Barb Fitting is widely used to connect various pneumatic pipes, quick and simple connections, and is good for hydraulic hose, air, water, liquid, fuel, oil, and gases.DURABLE DESIGN:1. Made of brass material, firm and durable, corrosion resistance, ductility at high temperatures, and low magnetic permeability.2. Hose fittings connect, control, change the direction of, and terminate the flow in piping and hose systems. T shape 3 way design, which provides positive connection, deeper and smoother threads design makes work easier and more effective. It is fit for temperature control circuits, pneumatic circuits, vacuum and fluid systems test, lubricant, coolant lines.NEED ATTENTION:1. Before purchasing, please confirm the right size.2. Manual measurement, please allow a slight dimensional error of the item.