Check the listing for details. 90mm Wet & Dry Sanding Discs Triangular Sandpaper Hook & Loop Pads 60-10000 Grit. Condition: New. Listed at 1.72 USD. Wet and Dry Sanding Discs Product Size Details Size(Diameter): 90x90x90mm Grit: 60 80 100 120 150 180 240 320 400 600 800 1000 1200 1500 2000 2500 3000 4000 5000 7000 10000# It means the thickness of sandpaper, which is gradually refined from 60 # to 10000 # (the larger the number, the smoother the finer the number, the smaller the number, the coarser the sharper the grinding). To achieve the mirror effect, 5000 #, 7000 # and 10000 # sandpaper must be used as fine grinding. 1. 60#-180#: Belongs to coarse sand series, generally used for polishing hard/coarse things, such as metal/wood/wall etc. 2. 240#-400#: This is what we often use. It is used for secondary grinding. Some less demanding ones can be directly shaped. 3. 600#-1500#: Belongs to the fine range, used for mahogany furniture/amber/bodhi/gold, etc. 4. 2000#-5000#: Mainly used for polishing, can be used to remove dead skin, polish the surface of nails, etc. 5.7000#-10000#: It is used for professional mirror polishing. It adopts unique nano technology, and the surface particle size is relatively fine. It is used for fine polishing of products. Application scope: Automobile manufacturing, automobile repair, metal, wood, bamboo products, plastic, paint, etc. Package Including: According to your choice. Guarantee: Good quality. Buy with confidence! We maintain high standards of excellence and strive to satisfy customers! If you need more specifications, please contact our customer service.Thank you. If you need a large amount we can provide wholesale, please contact us. Thank you. On Jul 25, 2024 at 16:52:41 PDT, seller added the following information: