3M™ Cubitron™ II Roloc™ 982C Fibre Discs 3M Precision Shaped Grain (PSG) maintains super-sharp points that exceptionally fast with less pressure. PSG runs cooler, reducing metal discoloration/oxidation and the chance of heat related stress cracks. Disc life is significantly longer, completing more parts per disc and requiring fewer disc changes. 3M™ Roloc™ attachment system provides for easy disc changes between grades or applications. Stiff fiber backing and a strong resin bond provide durability and tear-resistance for heavyweight applications Pack of 200