... 2. durable, flexible,easy, quick,economic 3. used in grinder for polishing metal,marble Reinforced Fibre Resinbonded Depressed Center ... Grinding WheelsGrinding Tool For WeldsUsage: Polishing disc for metal, stone, stainless steel, marble, parcelain ... polishedd machine on making free grinding. It is used in the cleaning weld of each aspect of automobile ...