Improved quality and finish: Our sanding pads use high-quality aluminum oxide abrasive. The aluminum oxide particles cut quickly to deliver a smooth surface for your projects. The open coat yields a uniform, consistent scratch pattern, and the stearate coating provides a better finish as well as easy cleaning and polishing. Multi-grit paper set for random orbital sanders: The sanding paper set includes discs with multiple grits and 8 holes. The higher the number, the finer the grit. Non-slip backing and secure mounting: The hook-and-loop pad on the electric sander uses a high-strength fabric and robust backing to ensure stable mounting, optimal performance and safety. Versatile and compatible: The 5-inch discs with 8 holes fit a wide range of metal and wood applications. The sanding pads for orbital sanders offer 7 grits: 40/60/80/120/180/240/320, covering grinding, polishing and finishing. Multi-grit discs for hand-held sanders: The 8-hole discs with multi-grit are included; higher numbers indicate finer grit. Use scenarios: - Prep wooden furniture surfaces before staining or painting. - Deburr and finish metal parts, trim, or automotive surfaces. - Refine edges and curved profiles on cabinets, doors, and other woodworking projects.