Efficient design utilizes all the brake pad’s surface evenly and eliminates lightening holes, which adds strength. Better heat dissipation. Self-cleaning. Provide maximum stopping power while remaining perfectly flat. Design is covered by an international license. Unlike cheaply designed, stamped stock rotors, Braking U.S.A. rotors are made from a super-tough, high-carbon-content stainless steel and laser-cut with a CAD-CAM machine. Used by top competitors.