Remember when the surface of your wood had a nice and smooth finish? The WEN 120-Grit 4-inch by 36-inch Belt Sander Sandpaper Package includes three pieces of high-quality sandpaper. This paper is designed to fit with the WEN 6502 4-inch x 36-inch Belt Sander with 6-inch Disc, but also has a universal design to allow for compatibility with many other models of 4-inch x 36-inch belt/disc sanders. Remember when your sandpaper provided maximum performance on wood, metal, plastic and many other materials? Remember WEN.