Size: Inner Diameter: 3/8" (0.4 inch/ 9.5 mm); Outer Diameter: 0.6 inch (16 mm); Length: 6 Ft Low Permeability Design: The use of engineering low permeability materials, can prevent fuel evaporation, compatible with ethanol blend fuel, gasoline and diesel, help reduce fuel consumption and environmental pollution High-Quality Material: Made of nylon, rubber and other materials, with good flexibility and corrosion resistance, can adapt to different working environments One-Way Flow: There is an arrow on the rubber ball to indicate the direction of fluid flow, which can prevent the backflow of fuel and make the fluid flow smoother Application: You can use this fuel line assembly in marine outboard engines, motorhomes, tractors and caravans requiring a reliable fuel line 3/8" ID Fuel Line Assembly with Primer Bulb Compatible with Mediums: Ethanol blend fuel, gasoline and diesel. Specification: Inner Diameter: 3/8 inch (0.4 inch / 9.5 mm) Outer Diameter: 0.6 inch (16 mm) Working Pressure：≤ 60 PSI Bursting Pressure：90 PSI Temperature Range：-20°F to 176°F (-29°C to 80°C) Min bending radius: 2.5 inch Universal Application for most brand equipments: Marine outboard engines Motorhomes Tractors Lawnmower Caravans Package Include: 1* 3/8" ID Fuel Line Assembly (6 FT)