3M Cubitron II Hookit Film Disc 775L, 320+ 3MIL, 5 in x NH (127 mm x NH), Die 500X 3M Cubitron II Hookit Film Disc 775L features 3M Precision Shaped Ceramic Grain, a revolutionary advancement in abrasive technologyThe triangular shaped ceramic mineral is designed to slice through the substrate, rather than gouging or 'plowing' like conventional abrasivesThis advanced technology results in a disc that cuts up to 2x as fast and lasts up to 6x as long as conventional abrasives. Product Information Brand 3M Part # 7100145405 Line Cubitron II Origin Country USA Product Information3M Hookit Attachment makes changing discs fast and easyCuts up to 2x as fast and lasts up to 6x as long as conventional abrasivesFilm backing for greater tear-resistance and edge retentionIdeal for a wide variety of substrates and applications focused primarily on stock removalRevolutionary 3M Precision Shaped Ceramic Grain technology provides fast cut and long lifeTo be used with random orbital sanders