THE 3Mâ„¢ FIBRE 501C IS A VERSATILE AND GENERAL PURPOSE METALWORKING ABRASIVE DESIGNED TO HELP WITH A VARIETY OF APPLICATIONS FROM GRINDING WELD REMOVAL AND FINISHING TO BLENDING ON METALS LIKE CARBON STEEL FIBRE IS ENGINEERED BY ADHERING ALUMINA-ZIRCONIA MINERAL TO A FIBRE BACKING USING RESIN THE CLOSED COAT CONSTRUCTION ON FIBRE MEANS MINERAL GRAINS COVER NEARLY 100 OF THE BACKING THE STIFF FIBRE BACKING IS EXTREMELY DURABLE VULCANIZED HARDENED AND CONDENSED PRIOR TO BEING COATED WITH MINERAL
