These cross-drilled brake rotors are precision-drilled and mill-slotted to maintain better stopping power in rain, dissipate heat, and clean the brake pad surface. They are manufactured from a superior metal alloy composition to maximize durability, reduce heat-related stress, and eliminate warping, and they typically last 35 percent longer than OEM brake rotors. Cooler operating temperatures ensure maximum friction between the pad and rotor for the ultimate in stopping power and quieter operation. All rotors are protected through zinc electroplating treatment to prevent rust. Lower your operating temperatures by up to 200 degrees F with a set of cross-drilled brake rotors.