Features 3M™ Precision-Shaped Grain, triangular-shaped grains that cut at least 30% faster and last at least 30% longer than other conventional ceramic abrasives Clean Sanding multi-hole pattern delivers excellent dust extraction 3M™ Hookit™ hook-and-loop style abrasive attaches firmly, removes quickly for fast change-out Kiss-cut scoring technology allows for use in multiple sheet lengths Sharper cutting surface means less pressure is required Grains are electrostatically oriented on abrasive surface for efficient cut .