Earls Vapor Guard(TM) submersible fuel hose is ideal for use inside fuel tanks to attach the in-tank fuel pump or pickup. Most other fuel hoses are designed handle fuel only the inside of the hose & can cause damage to the hose when submersed in fuel. Ideal for use w/ race gas, pump gas, alcohol & ethanol blend gasoline, biodiesel, and diesel fuel. Available in 5/16" or 3/8" sizes and sold in 2-foot lengths.