With 100 percent silicon carbide grain, the Durite S413 S413 SC coarse grit paper edger disc cuts easily and blends edger and drum sander scratches for smoother results. Strength and increased disc life comes from the heavy E, F and combination paper backing and the disc reduces dish out of springwood on strip and plank floors. When you want value and consistent results, choose the Durite S413 S413 SC coarse grit paper edger disc for your wood and concrete edger jobs.