COMPATIBILITY: It is suitable for most kinds of rotary tools, such as die grinders, air grinders, electric drills, cordless drills, etc. If you want to polish or clean small areas/objects, this kit is a great alternative, it will fit in any "chuck" type drill down to 1/4 capacity 10 GRADES SANDPAPER SET: Included 80 Grit, 100 Grit,180 Grit,240 Grit, 600 Grit, 800 Grit, 1000 Grit, 1200 Grit, 2000 Grit, 3000 Grit. (Each grit comes with 10 sheets.) FLEXIBLE DESIGN: The abrasive sanding disk combine with the Buffering pad well protects against damage to the backing pad. Easier for precise sanding of die surface, polishing of headlamps, wood, metal, lacquer, mirror surface treatment, art, jewelry, and craft, etc. WET AND DRY USING: Hook and loop sandpaper supports quick and easy changing, also prevents clogging, anti-static, and has better flexibility, thanks to the high-strength aluminum oxide grain textiles material. Nice for wet and dry grinding. You can use the polishing agent to create a smooth surface.