Advanced Coating for Advanced Protection - The DuraGo Electrophoretic process deposits the coating onto all exposed surfaces, protecting the rotor both inside and out,DuraGo Electrophoretic Brake Rotors are thoroughly coated including the inner vanes. Unlike a sprayed on paint, the rotor is fully immersed into a tank and coated by the process of Electrophoretic deposition,Dynamic black finish - complements open wheel designs,Multiple vane configurations for heat dissipation,Non-Directional swirl finish eliminates the need for machining before installation