[Super-hard abrasives]: sanding disc using high-quality materials, produced by carbothermic reduction, the hardest ordinary abrasive particles other than diamond, with a Mohs hardness rating of 9.5, integrated with the sandpaper base, hook and loop removal, Although it is easier to wear than alumina material, but it is sharper, suitable for harder metal or glass products that are difficult to polish and surface treatment[Wet and dry dual purpose]: wet sandpaper use waterproof latex paper base as a backing, can play a waterproof role to a certain extent, perfect for dry and wet polishing, wet sanding, can minimize scratches, prevent 5 inch sanding discs hook and loop from being clogged by dust, and remove Loose abrasive particles to reduce dust particles in the air[5-inch 8-hole design]: sand paper circles for metal use perforated design, more practical than ordinary disc silicon carbide sandpaper, longer life, anti-clogging, and anti-static. Combine our 5-inch 8-hole orbital sander with any Random orbital sander. Used in combination with sanding machine, dust-free and powerful sanding can achieve the effect of 1+1 Greater than 2[Package includes]: a total of 48 pieces of 5 inch 8-hole dry and wet sand discs, assorted grit 80 240 400 600 1000 1500 2000 (10 pieces for each grit) The grit size refers to the average grain size. The smaller the particle size, the coarser. The larger the particle size, the finer. for novice woodworkers, you have to sand with multiple grits.[Multi-scene applications]: Silicon carbide round sandpaper discs is often used in wet polishing applications, such as polishing stone and marble, and automotive polishing applications. In coarser sand, this abrasive can be used to remove rust, deburr metal and glass, and repair wooden floors.Colour:blackMaterial:sandpaperPackage Contents:1 set x2000 grit sandpaperOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.