The new Ford and Chrysler Hemi style cylinder heads being used in Pro Stock racing features a long, skinny tunnel to access the spark plug. MSD's new injection molded tubes are designed specifically for these hard to reach plugs. Product Features:Extra Long 8.5mm Wires So You Can Cut To Your Designed LengthDistributor Cap - Boots and Terminals IncludedIncludes Mini-Stripper-Crimper For Factory Style CrimpsIncl: Spark Plug Access Tool/Inject. Molded Tubes/Boots/Terminals