3M Sandpaper comes in a variety of minerals and a wide grit range. Ideal for painted surfaces, bare wood, and metal. Sheets can be cut to fit hand sanding, on a sanding block, or a power tool sander.3M Pro Pak Aluminum Oxide Sandpaper are the abrasives are the choice of professionals for sanding a wide variety of materials and surfaces. This durable sandpaper and outlasts ordinary glue bond paper. Made with aluminum oxide minerals. Life cut of the sandpaper and outlasts ordinary glue bond paper.