Multi-grain grinding wheels----- Each box contains 10 pieces of sandpaper of different sizes and 240 diameter hook-and-loop grinding wheels, providing you with more choices. The 8 holes are designed for efficient dust removal. Good material, easy to use-----high-quality alumina grinding wheel pad, durable and anti-static. It is easy to install and disassemble, sturdy and durable, and will not fall off during installation and use. Compatible ----- Suitable for Bosch PEX 220 A, PEX 300 AE, Makita DBO180Z, Makita BO5041, BO5031, DeWalt DWE6423, etc. Wide range of applications-mainly used for the grinding and polishing of wood, rubber, leather, plastics and other materials, as well as the rust removal, paint removal, deburring, and solder joint polishing of various complex profiles of metal and non-metal materials. Meet your fine polishing requirements. Professional grade sandpaper disc classification to meet your fine polishing requirements. Easy to use The hook and loop fastener is