Diablo's premium 3-7/8 in. x 5-1/2 in. 80-Grit Coarse CAT/Mouse Detail Sanding Sheets with Hook and Lock backing include break-through innovations that improve performance, extend sanding life and increase productivity. These sanding sheets are designed for use in Mouse Black and Decker and Corner Cat Ryobi sanders and are ideal for all types of wood, metal and plastics.