Black Hawk 2" Cubic Zirconia Quick Change Discs are an extremely versatile abrasive. Black Hawk Surface Preparation Discs are made from high quality cubic zirconia grains and use a male plastic roller attachment for attachment (equivalent to the 3M Roloc mounting system). These cubic zirconia discs last twice as long as the aluminium oxide variant. Do you want to get into small areas to remove scale oxidation, paints or waxes? Maybe you are cleaning a weld, deburring or just general grinding. Whatever the Job Black Hawk 2" Cubic Zirconia Quick Release Discs are a great option.