ALI INDUSTRIES 4210 9" x 11" Multi-Surface Sanding Sheets Product Description Multi-purpose aluminum oxide sandpaper provides excellent performance at a value price. These sheets are ideal for both hand and power tool sanding on wood, metal, fiberglass and painted surfaces. Aluminum oxide is a durable grain that is recommended by professionals for general sanding a wide variety of surfaces. From the Manufacturer Gator Grit 25 Count 9" x 11'' 80 Grit Medium General Purpose Sandpaper. The 80 grit medium sandpapers are designed for use on wood, metal, drywall, fiberglass and painted surfaces. You can use these sheets to sand by hand or with a machine. The sheets can also be used with an orbital sander by cutting the sheets into 1/2 sheet, 1/3 sheet or 1/4 sheet to fit your orbital sander. Features Great for general purpose sanding on a wide variety of materials including wood, paint, metal, fiberglass, and plastic Medium grit is best for moderate stock and paint removal and surface preparation before painting interior and exterior surfaces Sheets can be cut-to-fit 1/2 sheet, 1/3 sheet, or OE sheet sanders Resin bonding locks the grain to the paper for longer sanding life Heavy duty paper backing is durable enough for both hand and power sanding USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.