Sumax 8mm Custom Colored Spark Plug Wire Set Features: Designer plug wire sets come in distinctive, highly visible colors Pre-cut and have the plug/coil boots and terminals already installed Boots and wires are made from extra-high-temperature silicone, which gives protection up to 600 F Spiro-Pro core provides up to 10 times the conductivity of a standard carbon core wire Low resistance means they run cooler and last 3-4 times longer than carbon core wires Designed for electronic ignitions, but also work great on point types Available prefitted and universal with 90,180 and 135 degree plug boots Universal wire kits have 24 wire leads