Mesh sanding discs are sanding discs that are constructed from a mesh material. They are designed with thousands of tiny holes that are evenly spread out over the entire disc. These holes allow for improved dust extraction and cooling, which can result in longer disc life and less clogging of the disc. The discs are typically made from a high-quality abrasive material like aluminum oxide, which enables them to remove material quickly and efficiently. They are also available in a range of grit sizes, allowing you to choose the appropriate grit for your particular sanding needs. These discs are typically used with random orbital sanders, and can be used on a variety of materials including wood, metal, and plastic. Overall, mesh sanding discs are a reliable and efficient choice for any sanding project.