Mesh backing helps with dust extraction allowing 95% to 97% removal of sanding dustHelps provide a cleaner work environment than using traditional discs with dust extraction holesHook-and-loop backing helps make disc changes quick and easyIdeal for a wide variety of substrates and applications including stock removal and fine finishingThe triangular shaped ceramic mineral is designed to slice through the substrate, rather than gouging or "plowing" like conventional abrasives, resulting in a disc that cuts up to 2x as fast and lasts up to 6x as long as conventional abrasives