Features: *100% brand new and high quality. *The product is used for polishing drawing and trimming on the metal surface. *The larger the number the smoother the effect. *User should wear the mask pay attention to the positive and negative direction in the clamp and use the front empty rotation for 1 minutes. *Whether in a drill press portable drill lather or other application it can do the job well. Especially useful in hard to reach areas and inside curves. Specifications: Name:Flap Grinding wheel Material: Gauzer Shank Diameter:3mm Rod length: 40mm Outside Diameter:10mm Grit: 80/120/180/240/320/400/600 Grit Color:As Picture Show Size: 10*10*3mm (Outside Diameter:10mm) Package Contents : 10x Flap Grinding wheel 1x Mandrel