This flex fuel line is made of a stainless-steel flex braid over a nitrile rubber hose with an inner ply of Hypalon braided cord for extra durability. It is easy to cut with a hacksaw for custom installation and comes with a 1/4'' inner diameter and a 4-ft length. This fuel line exceeds original equipment specifications and is approved for use with all types of gasoline, diesel fuel, and octane boosters.