... flap wheel brand name:KMJ usage:grinding ,polishing ,sanding KMJ-2709 diamond abrasive flap wheel place of origin:dongguan , ... KMJ usage:grinding ,polishing ,sandinggrit: 60#-1500#size: dameter: 15- 80mm, thicknss: 10-50mmSpecificationssuper hard diamond and cbn sanding ... working time, little dust and noise when working. high quality diamond and CBN abrasive flap wheel for grinding and polishing