The standard21 Pack Sanding Discs, Round Sandpaper, 75mm Hook-and-Loop Sanding Discs, Wet and Dry Sanding Discs60-10000 for Flocking, SandpaperWith Hand Sanding Suction Cup and Power Sanding Adapter3 inch PACKAGE AND SIZE: The package contains 21 pieces of sandpaper. The sandpaper size 75mm / 3 inch, enough for daily use.21 DIFFERENT GRIT: There are 21 different grits: 60/80/100/120/150/180/240 /320/400/600/800/1000/1200/1500/2000/2500/3000/4000/5000/7000/10000. 1 pieces of each grit, on the back of the sandpaper there is a particle size marker. Different sandpaper can meet your different polishing needs. DURABLE MATERIAL: The sandpaper is made of black silicon carbide paper and latex paper, wear-resistant, anti-static , the sandpaper can withstand wet and dry use, has high flexibility, and is not easily broken when polished. VELCRO DESIGN: The back of the sandpaper has a design Velcro that can be stuck to a random orbit sander, Velcro sandpaper is easy to install and remove so you can sand quickly and efficiently. WIDE APPLICATIONS: Sandpaper can be used for sanding and polishing materials such as metal, wood, wall, leather, stone, etc. It is suitable for the automotive industry, the wood industry and the home.