Optimize your right-angle grinding performance with Norton RazorStar Speed-Change Fiber Discs, featuring a unique engineered shaped ceramic grain technology for the best cutting performance in the industry. Designed for medium- to high-pressure metal removal in the toughest grinding applications, Norton RazorStar discs cut through metal with unbeatable performance. Plus, new cutting points are automatically and easily exposed as the grain fractures so operators experience the smoothest possible cutting action in demanding applications.