3M™ Cubitron™ II Roloc™ Fibre Discs are engineered to cut faster, cooler and with less grinding pressure than conventional abrasives. Plus they can last up to five times longer, for increased productivity. 3M Precision-Shaped Grain (PSG) maintains super-sharp points that cut exceptionally fast with less pressureDisc life is significantly longer, completing more vehicle parts per disc and requiring fewer disc changesTriangular-shaped ceramic grain wears evenly, runs cool, and optimizes mineral breakdown