47080 cubitron hookit film discs 127mm (5") grade 320+ box of 50 discs

3M Cubitron II Hookit Film Disc features 3M Precision Shaped Ceramic Grain, a revolutionary advancement in abrasive technology. The triangular shaped ceramic mineral is designed to slice through the substrate, rather than gouging like conventional abrasives, resulting in a disc that cuts up to 2x as fast and lasts up to 6x as long as conventional abrasives.