Remember when you had to grind these rounded edges by hand? Give your surfaces the finish they deserve. This set is designed for use with the WEN AT6535 orbital sander, and contains ten 120 grit sandpaper sleeves in total of five different diameters: 1/2, 3/4, 1, 1-1/2, and 2". Each sleeve measures 13.5-1.9 cm in height.