These Shopsmith 80-grit sanding discs are made with a sharp aluminum oxide that is ideal for tough tasks like rapid wood leveling and removing rust and paint. They feature flexible, tear-resistant film backing that won't crack or peel when wet. The vented 8-hole pattern helps to collect dust, and the surface is covered with an anti-clog coating that prolongs life. Hook and loop backing allows for quick and easy sheet changes. The package contains 15 sanding discs.