The factory rotor set screws are easily damaged during removal and by the excessive heat and elements that they’re exposed to on a daily basis. If the screws on your rotors are corroded or damaged, replace them to make your next brake job a bit easier. These stainless steel screws will not rust, and can be used again and again when changing your rotors. It is recommended that you apply an anti-seize product to help make the job even easier, ECS offers a wide variety of anti-seize products under General Purpose -> Compounds -> Anti-Seize.