Veering from the original design can increase weight and impair proper heat dissipation, which can change the geometry of the wheel and lead to pulling, pulsing and the need to have service performed prematurely on your vehicle. With Raybestos® brand Professional Grade™ rotors, you can be assured that there are no significant differences from the original design. Professional Grade™ rotors are tested to ensure the replacement rotor will maintain a safe and reliable braking system. Providing full line coverage and great value, Raybestos® brand Professional GradeTM rotors are evaluated and analyzed for proper specified characteristics and tolerances. *PG Rotors do not come with the black hat finish and have a non-directional finish* *Image is for illustration purposes only and does not necessarily represent the actual product.*