Corvette Spark Plug Wire Protector "Koolsox" (Set 8) : 1997-2013 C5, C6, Z06, ZR1 & Grand Sport"Koolsox" is a must have when using headers! This remarkable new product is a double layered fiberglass sock, which was designed as a safety feature for exposed spark plug boots and wires. Its unique ability to detect burn areas before they occur will avoid any misfire! Easy to install, just slide it on like a sock! Work with all 1997 and newer Corvettes Sold as a complete set of (8) Length = 8 1 4" How does it work? This is a high temperature