3 inch Grindex Disc for Marble, Granite and ConcreteThe 3 inch Grindex Disc is engineered for the initial stages of grinding and lippage removal on hard floor surfaces. It is suitable for marble, granite, concrete, and terrazzo. These discs are utilized in professional floor cleaning and restoration to prepare surfaces for subsequent polishing. The design of these discs helps to flatten uneven areas and rough edges, creating a consistent scratch pattern that is ready for further refinement with resin