GEOMET® premium brake rotors start with quality materials and precision ECS machining. That would be enough for most of us, but it is only the beginning. To prevent brake pad deposits and reduce fade, select a drilled and slotted ECS GEOMET® rotor. Crossed-drilling dissipates heat faster for better braking and reduced fade. Slotting cleans the pads by moving water, gases, and contaminants away from the pad/rotor contact surface to further enhance braking performance. To prevent rust pitting and corrosion damage, ECS GEOMET® rotors are sprayed with a special water-based solution, then heated to cure the coating and remove all oil residue remaining from the manufacturing process. These added steps create a durable, lasting rotor surface that resists road salt, solvents, and other corrosives. GEOMET® is a proprietary water-based coating that contains metal oxides, metallic zinc, and aluminum flakes. More environmentally friendly than other treatments containing toxic metals, GEOMET® coating contains no nickel, cadmium, barium, or mercury.