Design Engineering 010414 Cool-Tube Heat Reflective Sleeve, 0.5" x 36" - Silver Heat reflective solution for wires, cables, hoses, fuel lines, etc. Withstands direct heat up to 500 degrees F Made of convoluted nylon 6 tubing - not plastic Reduces temperature an average of 43% Pre-slit lengthwise, eliminating the need to disconnect cables, hoses, wires or brake lines for an easy installation