3M Fre-Cut Sandpaper resists loading for a longer life compared to ordinary sandpaper. High-quality, dry sandpaper that resists loading when sanding fiberglass, metal or wood. Used for dry sanding applications by hand or with an electric sander. Constructed from silicon carbide and aluminum oxide grains for a sharp cut and optimal abrasiveness. Key Features Individual sheets Optimal abrasiveness for a sharp cut Use for dry sanding on fiberglass, wood or metal