9 Pack Abrasive Sanding Sponge Blocks, Wet and Dry Dual-use, Coarse and Fine Sanding Block Fine Medium and Coarse Grits, Washable and Reusable, Ideal for Wood and Metal Polishing HIGH QUALITY MATERIAL: These sanding blocks are manufactured from high-density sponges with special treatments as the base material and brown corundum with special glue formulas, They are flexible and easy to use, with no sand loss and a long service life. 5 DIFFERENT GRIT SIZES: The Sanding Sponges includes 9 pack of 5 different coarse and fine specifications assortment in 1x36, 2x60,2x80, 2x120, 2x240 Grits. It is generally better to select the smaller number ones for roughing and then select the larger number ones for fine processing, since the smaller number ones have a coarser grit and a higher polishing efficiency, but the rougher the grinding effect. MULTI-FUNCTIONAL: We deliver Sanding Blocks that are suitable for grinding flat and irregular surfaces, wet or dry, portable, and handy, with a special design that withstands all kinds of use. They are washable and reusable and can be used directly in water. Perfect for sanding of metal, fiberglass, wood, paint, plastic and drywall materials. WASHABLE AND REUSABLE: Our Sanding sponges are designed for wet and dry dual use, which reduces flushing and helps improve efficiency. You can rinse them with water, so they can be easily cleaned and reused. Afterwards, make sure that the water is dried thoroughly. PORTABLE SIZE: 100x70x25mm, perfect size for handy use. This foam sponge base makes it easy to sand contours, irregular shapes, and flat surfaces. It can be DIY into many shapes and specifications., Weight: 0.3086471668 Pounds, Manufacturer: Art-Manufacture-Design