The 3M ROLOC Abrasive Disc, measuring 3 inches in diameter with a grit rating of 120, is designed for effective surface conditioning across various applications. Ideal for use on metal and plastic surfaces, this disc provides a balance of aggression and finish, making it suitable for both heavy material removal and fine finishing. Its robust construction ensures durability and consistent performance, making it a reliable choice for professionals seeking high-quality results in their grinding and sanding tasks.