Helix Submersible Fuel Line Universal fuel line from Helix is ready for any application. Features: Semi-rigid fuel line designed for long-term chemical exposure / submersion Resistant to fuel, oil, alcohol, water for in-tank applications Available in various sizes and lengths: 5/16 (7.9 mm) or 1/4 (6.3 mm) diameters From 18 inches to 25 feet lengths Semi-see through, white translucent tubing shows fluid level / flow Tubing has a thin nylon outer layer, polyurethane middle layer and a thin nylon inner layer Very high chemical resistance to withstand almost any chemical exposure, especially fuels and oils Can be used for other fuel line applications including fuel injection and with fuel containing alcohol Allows for maximum space efficiency compared to other submersible tubing Made in the USA