The SHW Performance Drilled Monobloc Rotors PFL39965 are high-quality brake rotors designed for performance vehicles. These rotors feature a monobloc design, meaning they are made from a single piece of metal for increased strength and durability. The rotors also have drilled holes to aid in heat dissipation and improve braking performance. They are compatible with a wide range of vehicles and are ideal for track use or aggressive street driving.