Dual diode assemblies, each with an array of 10 diodes, for a total of 20 diodes. Redundant capacity is designed in - if individual diodes fail, load is shifted to remaining functional diodes Straightforward design makes it an easy retro-fit in almost any charger with a "positive base" rectifier - those chargers with the positive DC lead/clamp assembly connected to the rectifier heat sink plate Full-wave rectification Includes Resistor Kit - for chargers manufactured by Associated Eqpt and equipped with "Stop/Go Lite" polarity protection technology (polarity indicator in the clamp). If your charger does not have this feature, do not install the resistor Equipped with center-mounted, insulated mounting bolt - for transformer mount on older Associated chargers, or direct mount in retro-fit applications with Rectifier Mounting Bracket Kit Sold, Shipped, and Supported by PLP Battery Supply in Murphysboro, IL, USA. Questions? We are real people, based in the U.S.A. Our phone number and email is included with every product. Our Heaviest-Duty Positive-Base Rectifier. Designed for use in chargers with continuous-duty output ratings up to 100 Amps, and "Boost" ratings up to 600 Amps. This rectifier is a direct replacement for Associated P/N 610100, used in Associated charger models 6001, 6002, 6002A, 6002B, 6003, 6006, 6008, 6009, 6009A, 6014, 6027B, 6065, NAPA 85-800, MATCO MC600, and SNAP-ON models YA165A, YA166B, YA167A, YA167B, YA168A, YA268, and others. Robust capacity makes this the perfect replacement rectifier for a wide variety of high-output battery chargers, especially those with high "boost" ratings.