8.5mm Blue Ultra Pow'r WiresFord 351W, 351C, 390, 429, 460 with HEI Cap90 degree Male Distributor TerminalsMulti-Angle Plug TerminalsIncludes:Wire MarkersWire SeparatorsDielectric Grease Features:Greatly exceeds OE specs for RFI and conductivity at 500 ohms per foot resistanceSpark plug boots and outer jackets are made of high-tear heat-resistant siliconeThe two outer jacket layers are separated by nylon pull tape for added pull strength & terminal retentionSilicone Jacketed to resist high temperature, fuels & oilsStainless steel terminals connected using fold-over crimping that won't vibrate loose like core crimpingWires include wire separators, numbered wire markers, and dielectric greaseSets include coil wire (except where noted)Made in the USAJEGS Spark Plug Wire Dimension Chart