Used for Under Hood motor compartment requisitions. Please see pictures for more information. Pre cut 2 feet tubing that is more rigid than the flimsy sleeved in rolls. This listing is for a total of 2 strips or 4 feet total. The Aluminum Coated Fiberglass Heat Reflective Sleeve of BST Thermal Protection Products Co.,Ltd is a flexible, tubular sleeve composed of fiber glass and Polyster monofilament sealed with an aluminium foil. It can be utilized to secure industrial wires, cables, hoses of hydraulics, piping and tubing from glowing heat sources such as glowing steel slab, liquid metal pour stream, infrared heaters and other the same sources. Moreover, the device flow simply over wires, cables and hoses.The sleeve is made up of high-bulk high insulation value convoluted fiberglass. It follows more than 95% of the radiant energy that strike its outer part, keeping the underlying cables, hoses and wires cool.