Wet sanding and dry sanding each have their own advantages for sanding effectiveness, time savings and creating a professional-grade finish for your auto body repairs. Wet sanding helps keep dust out of the air and reduces clogging of the sandpaper which can slow you down and cause unwanted scratches in the surface. Wet sanding is generally done during the more refined stages of body repair. Dry sanding tend to remove stock from the surface faster and saves you from having to continually dry the surface - you can instantly check the progress of your work. Our 3M™ Wetordry™ sandpaper saves you time and hassle right from the start. It allows you to keep just one sandpaper on hand and to eliminate extra time switching between sandpapers, even if your project requires both dry and wet sanding.