Compatible with: 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 Flexible Design: The abrasive sanding disk combine with Buffering pad well protects against damage to the backing pad. Easier for precise sanding of die surface, polishing of headlight, wood,metal, lacquer, mirror surface treatment, art, jewelry, and craft, etc. Wet And Dry Using: Hook and loop sandpaper supports the 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 with the polishing agent to create a smooth surface. Colour: Red + Black Material: Alumina + Sponge Package Contents: 200 x sandpapers (80/100/180/240/600/800/1000/1200/2000/3000 each 20 pieces) 1 x hook back plate 1 x Soft Foam Buffering Pad 1 x metal round shaft Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.