Material - Corundum abrasive surface provides durability and can be used for dry or wet grind. on various surfaces. Size - Available in multiple grit options from 36 to 280, each block measures 100x70x25mm (3.9x2.8x0.98 inches). Application - Suitable for polish. wood furniture, metal, drywall, and kitchen rust, as well as prepar. surfaces for stain. or paint.. Feature - High-density sponge core is soft, ., and offers cushion. to reduce scratches; easy-grip shape enhances control. Care - Blocks are washable and reusable, designed for both wet and dry polish.; rinse after use and air dry.