• Set of 4 sponges/sanding blocks for wet and dry surfaces: coarse, medium, fine, and superfine • Made of high-quality brown corundum and high-density sponge as the base • Available grits: coarse (60-80), medium (120-180), fine (240-320), superfine (400-600) • Each sanding block measures 98 x 68 x 25 mm • Washable, reusable, durable, and easy to grip • Do not tear easily and are portable • Suitable for sanding wood, glass, paint, metal, plastic, porcelain, or drywall • Allow you to work on any geometric surface, even curved or irregular ones • Ideal for all kinds of small decoration jobs • Includes: 1 coarse sanding sponge, 1 medium, 1 fine, and 1 superfine