3M™ Cubitron™ II Stikit™ Clean Sanding Film Disc 775L features 3M Precision-Shaped Grain, a revolutionary advancement in abrasive technology. The triangular shaped ceramic mineral is designed to slice through the substrate, rather than gouging or 'plowing' like conventional abrasives. This advanced technology results in a disc that cuts up to 2x as fast and lasts up to 6x as long as conventional abrasives.