This Top Street Performance Pro Billet distributor gives you top performance at an economic price and offers long-term durability with dual bushing construction hardened steel gears and solid brass terminals.This distributor is intended fo r use with a CDI (capacitive discharge ignition) type box as well as an external coil. {specs}Features:CNC machined shaft constructionOversized shaft to provide the strength and support for smooth operation to 9000 RPM Sealed ball bearings and sintered bushingQuick clip-on cap with spark plug wire retainerMaintenance free magnetic pickupTuned for optimal performancesMechanical weights and springs are setup for optimal performanceUniversal butt connector for easy plug and play