4.5″ terrazzo diamond disc

A 4.5-inch diamond disc for terrazzo is a specialized abrasive wheel used with a standard 1$4\frac{1}{2}\text{-inch}$ angle grinder (2$\text{115mm}$).3   Terrazzo is a composite material made of chips of marble, quartz, granite, or glass set in a cementitious binder. Because it is a hard, masonry-based material, it requires a diamond disc for effective cutting, grinding, or smoothing.