TAYLOR CABLE 64652 8 mm. Blue Spark Plug Wire SetFeaturesHigh temperature and oil resistant wire insulation.High temperature silicone spark plug boots.Works in high under hood temperatures.Offered with wire core.Diameter - 8 mm.Wire Material - Silicone.RFI Suppression - Yes.Color - Blue.Number - 8.Distributor Boot Color - Blue.Distributor Boot Mate..