Cross-Drilled and Slotted Brake Rotors Rear Highest Quality G3000 Grade Casting Blanks Zinc-Plated for Corrosion Resistance Drilled Holes Keep Rotors up to 180 Degrees Cooler Rotor Slots Maintain Clear Contact Between Pads an|Power Stop Cross-Drilled and Slotted Brake Rotors Rear Highest Quality G3000 Grade Casting Blanks Zinc-Plated f.