Our 3M Performance Sandpaper is a premium abrasive sheet that is built specifically for hand sanding on jobs such as shaping auto body filler or putty. These one-third (9??x 3?? sandpaper sheets feature fast-cutting, long-lasting aluminum oxide/ceramic blend abrasive on durable paper backing that attaches easily to sanding blocks. This sandpaper is ideal for use with the 3M Body Repair System.