This sheet sander 40-pack includes a variety of grits to meet the needs of any project at hand such as decorating or detailing. Each sander pad is designed to fit any rectangular sander machine, this set includes 40, 60, 80, 120, 180, 240, 320, and 400 grits (5 of each). Hook-and-loop backing ensures easy installation and removal. Dust holes eliminate messes during use!