... brand name:KMJ usage:grinding ,polishing ,sanding KMJ-2708 diamond abrasive flap wheel place of origin:dongguan ,china(mainland ... #size: dameter: 15- 80mm, thicknss: 10-50mmSpecificationssuper hard diamond and cbn sanding products 1,for glass, stones,steel,etc ... 2,professional manufacturer 3,more economicThe superabrasive diamond and cbn sand paper products( abrasive belts, block, discs ...