8mm; Includes HEI Distributor Cap and Rotor, Coil Cover, Blue Max™ high-performance Wire Set, and Super Loom Kit; Developed for racing, all ignition components engineered to improve ignition accuracy, fuel economy, starting, and throttle response; HEI Distributor Cap & Rotor precision molded from advanced polymers with solid brass contacts to provide high dielectric strength & unsurpassed timing accuracy; Custom-Fit Blue Max™ 8mm, 800 ohm Spiral Core Wire Set is factory terminated in the correct lengths with numbered I.D. tags, corrosion-resistant locking plug terminals and high-temperature silicone boots; Wire Loom Kit with separators and show quality chrome brackets routes wires over the valve covers to keep them away from hot exhaust manifolds or headers; Emissions legal in all 50 states