The Vevor sanding sponge set includes four sanding blocks in 60, 80, 120, and 220 grits for coarse-to-fine surface prep and finishing. Made with aluminum oxide abrasives and a sponge base, these blocks are washable, reusable, and designed for lasting performance. They can be used for both wet and dry sanding on drywall, wood, metal, plastic, and furniture surfaces. Their compact handheld size makes them easy to control on corners, curves, and irregular shapes.