Brass barbed hose fitting, straight barbed reducer, coupler adapter, 8 mm x 4 mm (2 pieces)

Barb diameter (fits inside pipe diameter): 8 mm to 4 mm (5/16" to 1/8"); Overall length: 42 mm/1.65"; Hex width: 10 mm/0.39"; Barb length (approx.): 17 mm/0.67". Fittings used to connect two pipes of different diameters in a straight line. The barbed bar creates a tight seal on flexible and semi-rigid hoses when used with hose clamps, crimp sleeves, or crimp ends (not included). Brass offers corrosion resistance, high-temperature ductility, and low magnetic permeability. Commonly used for quick and easy connections of air, water, fuel, oil, and inert gas lines.