Five Oceans Universal Marine Fuel Line Outboard with Primer Bulb, 3/8", 5/16" COMPATIBLE WITH ETHANOL BLENDED FUELS - Engineered low permeation material which prevents fuel evaporation. Not mention, suitable for Boats, RVs, Tractors, and Caravan UNIVERSAL FUEL LINE - 5/16" (7.93mm) Hose with a 6-foot long fuel line PREMIUM QUALITY rubber bulb with rubber line hose and stainless steel clamps ONE WAY Valve Orientation NOTE: This is rubber product, please do not store this item under direct sunlight or other rough environments Type: Primer Bulb Fuel Line Hose Size: 5/16 inch Hose Length: 6 FT Fuel Demand Valve: Yes Ethanol Compatible: Yes