Norton® NorZon® Plus R823 Plyweld® RR-Flex 180 Grit X weight Wide Belt measuring 37" 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.