The EBC Brakes USR Slotted Rotor Sets USR501 are high-performance brake rotors designed for use in vehicles. These rotors feature slotted design, which helps to improve braking performance by reducing heat buildup and allowing gases to escape. The rotors are made from high-quality materials and are precision-machined for a perfect fit. They are also coated with a black Geomet finish for corrosion resistance. The USR501 rotor sets are easy to install and provide improved braking power, shorter stopping distances, and longer rotor life. They are suitable for both street and track use.