Radium Submersible Fuel Tubing, 3/8" X 17.7"These fuel tubing kits are commonly used for plumbing in tank submerged fuel pumps. The flexible convoluted tubing is manufactured from polyamide nylon and is therefore resistant to all fuel types including alcohol blends such as E85 and suitable for EFI fuel pressure. There are 2 inner diameter sizes available including 5 16" (8mm) and 3 8" (10mm). When installing, run hot water over the ends first to loosen the material. This allows the tubing to