Protect your vital wiring, cables, brake, and fuel lines with this Design Engineering Cool-Tube protection tubing! DEI designed this tubing to provide the ultimate thermal protection to vital components. This tubing withstands direct heat up to 500 degrees Fahrenheit! The tubing resists abrasions, contaminates, and even condensation. DEI starts off with convoluted nylon 6 tubing for heat resistance that plastic will not provide. The tubing is then covered with heat resistant glass fiber fabric for even further protection. This protection can reduce temperatures by more than 40%! Finally, DEI pre-slits the tubing lengthwise so there's no need to disconnect wiring, hoses, or cables. The inner diameter is 1/2" and the overall length is three feet.