CNC machined billet aluminum housing and billet aluminum baseEasy-to-adjust mechanical advance with supplied springs and stop bushingsMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the RPM rangePolished steel shaft is QPQ coated and guided by a sealed ball bearingAdvance plate and weights are fine blanked from chromoly steel and QPQ coated for friction reductionMSD'S pro-billet Pontiac v8 distributor for Pontiac engines built for either street performance or hard core racing applications. Special features include a fully adjustable mechanical advance assembly. For all-out racing, the advance mechanism can also easily be locked-out. For stable timing, a high-output magnetic trigger pick-up is used to supply the ignition with a trigger signal. Additional stability is achieved via the 0.500 inch Hardened distributor shaft that is supported by sealed ball bearings.