Sumax Blue 8MM Spark Plus Wires XG206 Designer plug wire sets come in distinctive, highly visible colors Precut 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 600F Spiro-Pro core provides up to 10 times the conductivity of a standard carbon-core wire Low resistance means they run cooler and last three to four times longer than carbon-core wires