1ULTRA FINE SANDING SPONGES: This set includes 10 pieces of ultra fine sanding sponges with a dual sided design, featuring 1000 grit on green side and 5000 grit on the white side. 2VERSATILE USES: Use these sanding blocks for polishing watch straps, nail filing, fine woodworking, cleaning and polishing metal, sanding clay, finishing wooden furniture, woodturning finishes, automotive work, and more. 3WASHABLE AND REUSABLE: Easily wash and reuse these sanding blocks by simply rinsing with water. They can be used multiple times, providing convenience and effectiveness. 4PORTABLE AND CONVENIENT: These sanding blocks are lightweight and compact, making them easy to carry and use on the go. Whether you're working on projects at home, in the workshop. 5ROBUST MATERIALS: Constructed with robust sandpaper and soft sponge material, these sanding blocks offer maximum resistance to clogging and loading, increasing productivity and reducing material consumption. 10 xSandingBlock