Features: Users often need to repeatedly replace sandpaper when performing woodworking, metal or plastic surfaces treatments, and this type of sandpaper can effectively extend its service life and reduce the frequency of replacement. Triangular 5-hole back velvets structure, suitable for various polishing machines. Traditional sandpaper may encounters mismatch issues during installation, but this design ensures seamlessly suitable for most commercially available polishing machines, improving work efficiency. The back velvets design supports quick installation and disassembly without the need for additional tool. We will not waste time by replacing consumables, ensuring the continuity of the workflow. 30pcs sheets of packaging meet long-term usage needs, with each sandpaper evenly distributed with particles to ensures the smoothness of the polishing surfaces. Suitable for high standard industry such as furniture manufacturing and automotive repair. Not toxic and harmless materials that complies with international environmental standard. Many users are concerned about the generation of harmful dust during use, but this product have undergone strict environmental testing to ensures the health and safety of users during use. Specifications: Component: Alumina Grit:60,80,100,120,240,320 Size: Suitable for a variety of triangular grinding machines Quantity:30pcs Package Includes: 30pcs Mouse Sander Sandpaper note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.