3/8" I.D., Fuel Line Assembly Kit, Includes Alcohol Resistant Primer Bulb, 7' Fuel Line Hose & Thermoplastic Barrier That Helps Protect The Atmosphere From Harmful Hydrocarbons That Escape Through The Carcass Of Ordinary Fuel Hose, Surpasses All Of CARB's Stringent Permeation Requirements, Hose Has An Abrasion & Weather Resistant Cover To Help Protect From External Application Abuse, Approved For Bio-Diesel Fuels That Meet ASTM D 6751 Requirements Per UL Guidelines For Bio-Diesel Compatibility, Meets U.S.C.G./ABYC/EPA Requirements, Limited Lifetime Warranty.