3M SandBlaster Series 20400-G-4 Sandpaper, 11 in L, 9 in W, 400 Grit, Ultra Fine, Aluminum Oxide Abrasive

Can be used on a wide range of surfaces including paint, wood, metal, plastic and fiberglass. No slip grip backing. Sharp and synthetic minerals cut fast, stay sharp and resist clogging. Can be used by hand, on a sanding block.