EBC Turbo Groove Brake Rotor feature slotted and dimpled surface to allow degassing for better stopping. Made from 100% European castings and CNC Machining ensure a top quality product. These discs now feature a black coating to help fight against corrosion. This coating will wear away on the "swept" surfaces. Groove and dimple pattern is directional, so there is a left and a right. Price is for one rotor, so order two. Will not fit SVT Focus.