Features: Capacitive discharge technology Multiple sparks improve starting and idle Full power output at high rpm Easily connects to points, amplifiers and magnetic pickup distributors Adjustable rev limiter for over-rev protection Fits Small Block Ford 289 & 302 (Will not Fit EFI Engines) Male HEI Terminals for secure wire attachment with Brass Terminals Heavy Duty 1/2” steel shaft with a Sealed Ball Bearing on Top and a long sintered bushing to precisely locate the Reluctor This combination yields stable timing and spark delivery up to 10,000 RPM Polished& Coated Shaft & Advance Plate Reduces Friction & Prevents Corrosion .