- Flexible wet- and dry-sanding foam block. Made from high-density foam for excellent tear resistance and strong pliability, it maintains its shape during use. Can be used wet or dry for different sanding tasks. - 7 grit options. 60, 80, 100, 120, 180, 240, 320. Grits are clearly labeled on the block for easy identification, covering coarse to superfine sanding needs. - Washable and reusable. This foam block is washable and reusable for extended use. Its water-retentive design enables wet operation, reducing clogging and increasing efficiency. - Portable and versatile. Compact and easy to handle, suitable for polishing flat and irregular surfaces. Compatible with wood, paint, metal, plastic, and drywall. Ideal for cleaning kitchen appliances, woodworking, furniture polishing, metal rust removal, amber polishing, and more.