Double Size Hose Connections:You will receive 12 pcs straight barb hose fitting reducer connector couplers in 6mm to 4mm,8mm to 6mm,10mm to 6mm types. They can connect two different hose diameters on a solid straight section and are ideal for hose transition connections. Excellent Durability: These hose fittings are made of high-quality brass with excellent corrosion resistance, high temperature resistance and low magnetic permeability, making them suitable for a wide range of harsh environments such as automotive, industrial or domestic use. 3 Types : There are 3 types of brass barb hose connectors, 6mm to 4mm,8mm to 6mm and 10mm to 6mm, which can be used for connecting 6mm (1/4 inch) with 4mm (1/8 inch) ID hose, 6mm (1/4 inch) with 8mm (5/16 inch) ID hose, 6mm (1/4 inch) with 10mm (3/8 inch) ID hose. Help you simplify the layout of the piping system. Compact Design: The compact size of these barbed hose fittings makes them easy to operate in tight spaces, suitable for DIY repairs or professional plumbing modifications. The barbed structure on both ends prevents leakage and ensures a firm grip and reliable connection to the hose. Widely Compatible: This straight hose coupler is widely used for air, water, fuel, oil and inert gas line connections, it is a versatile brass coupling accessory for the workshop, toolbox or household., Weight: 0.0440924524 Pounds, Manufacturer: Tabanzhe