Allstar 20 feet 5/16 inch Diameter 304 Stainless Steel Coiled Tubing Fuel Line has a fuel line which is made from 304 stainless steel coiled tubing and has a 3/8 inches diameter. It comes in a roll of 20 feet. The coiled tubing works great for building one piece custom fuel lines without unions. The stainless steel tubing is 304 grade and double annealed for easy flaring and bending. The tubing does not include flare nuts. It is sold separately. It is backed by a 90-day limited factory warranty and sold individually.