This line features a rugged stainless braided outer shell with a PTFE inner liner. The PTFE (Polytetrafluoroethylene, also known by the brand name Teflon) liner is compatible with any type of fuel you can think of (Gasoline, E85, E100, Methanol, Diesel, etc). The PTFE inner liner doesn't break down like rubber hoses.
PTFE also eliminates the fuel vapor smell associated with old school rubber hoses.