Product specifications:</b> <ul> <li>Material: brown corundum and high density sponge.</li> <li>Particles: medium and fine (100 mesh)< /li> <li>Dimensions: 98 x 68 x 25mm.</li> <li>Quantity: 8 pieces in total.</li> <li>Contents: 4 medium-fine sanding sponges.</li> </ul> Product Description:</b> <ul> <li>8 sponge sand blocks for wet and dry surfaces, medium to fine sand.</li> <li>Material: The polishing sponge is made of high quality brown corundum, with high density sponge as the base material. Convenient and portable.</li> <li>Included in a variety of sizes: a total of medium to fine (100 grade) sanding sponges. Satisfy your needs.</li> <li>Wet and Dry Use: The sand block can be washed and reused for wet and dry use. Easy to clean, durable, easy to grip, not easy to tear.</li> <li>Versatile: Can be used on wood, paint, metal, plastic or drywall. Suitable for all kinds of small jobs, it can grind any uneven geometric surface, portable and practical. Great tool for polishing or cleaning.</li> <li>Usage: Sanding blocks can be used on wood, glass, paint, metal, plastic, porcelain or drywall etc.</li> <li>Sand block size: 8 pcs/pack. Each block measures 3.9 x 2.7 x 1 inch / 98 x 68 x 25 mm.</li> </ul>