MM Grade abrasive colors range from light to dark grey. Use them for finishing plastics, acrylics, polycarbonates, bakelite, soft woods cultured marble, coatings and more. Micromesh products feature a unique cushioned abrasive used to produce high-quality finishes. A cloth-backed material, Micromesh has a resilient layer of latex upon which abrasive crystals are specially bonded. Micromesh works on the basis that when pressure is applied, the silicon carbide crystals recede and rotate slightly to present their cutting edges evenly across the surface, shaving, rather than gouging it. The abrasive crystals all cut together with a fine planing action. It may be used wet or dry. Select from the following: MM-1500, MM-1800, MM-2400, MM-3200, MM-3600, MM-4000, MM-6000, MM-8000, MM-12000. Unlike conventional abrasives, Micromesh cloths can be washed in soap and water and used again and again. They are available in individual 6 x 6 in. sheets.