Black Hawk 2" A/O Quick Change Discs are an extremely versatile abrasives. Black Hawk surface prepping discs are made with the highest quality Aluminum Oxide grains and use a threaded male, plastic roll on attachment for fastening. Looking to get into small areas to remove scale oxidation, paints, or waxes? Maybe you're cleaning up a weld, deburring, or just general grinding. Whatever the job Black Hawk 2" Aluminum Oxide Quick Change Discs are a great option.