o Self-fracturing aluminum oxide abrasive stays sharper longer and is available in very coarse grits to handle the toughest jobs. o Discs are green in color with durable cloth backing. o The convenient Roloc quick change attachment system makes it easy to switch between grades and jobs in seconds, including a color-coded button that identifies the grade of the disc for accuracy as well as speed. o The aluminum oxide mineral abrasive on our 3M Roloc Green Corps Abrasive Disc provides a sharp cut — more aggressive than a comparable closed coat abrasive of the same grade, and vital in a grinding disc. o 3M formulated Green Corps™ bonded abrasives with a tough, durable combination of abrasive grain, resin bond and reinforced fabric — ideal for heavy stock removal, cutting, rough grinding, weld preparation and weld removal. o 3M's Roloc attachment system provides a quick yet secure method of attaching a wide variety of quality abrasive discs to rotary tools.