The Cubitron II Clean Sanding Hookit Disc features 3M precision-shaped grain technology that provides faster cutting for paint removal, body filler rough shaping and featheredging that ultimately lasts long and delivers a finer, more uniform finish. The disc is 30 percent faster and lasts twice as long as conventional ceramic premium abrasives. Discs are available in 80+ and 120+ grit for 3-inch, 5-inch and 6-inch sanders and are designed to work with a vacuum or independently.