Remember when the surface of your wood had a nice and smooth finish? the WEN 80-Grit 3 x 21-Inch belt sander sandpaper package includes ten pieces of high-quality sandpaper. This paper is designed to fit with the WEN 6321 3 x 21-Inch belt sander, but also has a Universal design to allow for compatibility with many other models of 3 x 21-Inch belt/disc sanders. Remember when your sandpaper provided maximum performance on wood, metal, plastic, and many other materials? remember WEN.