Diablo's premium masonry cut-off discs provide superior performance and increased productivity. Featuring a premium aluminum oxide blend, these discs cut through material faster than other cut-off discs and offer an extra long cutting life. Premium aluminum oxide blend - a superior quality formulation designed for fast material removal and long cutting life.For use on masonry applications including concrete brick, cinder block, cement and paver stones.Fully reinforced for use in hand-held cut-off work.Ideal for use when working in hard to reach areas.Compatible with angle grinders.