Norton® NorZon® Plus R823 Plyweld® RR-Flex 80 Grit X weight Wide Belt measuring 25" X 60" is made self-sharpening zirconia alumina abrasive for durability. Plyweld RR joint belt with polyester waterproof cloth backing renders aggressive cut and lasting life. Average flexible belt is perfect for dry or wet, fine grit, all metal and wood applications.