Engineered with a premium, self-sharpening zirconia alumina abrasive, ProSand R811/R816/R831 medium grit cloth portable belts cut faster and last substantially longer when compared side-by-side with the next leading competing product. The ideal choice for medium grit stock-removal work, these belts feature a patented grain technology that lets them produce unsurpassed fine finishes. Featuring anti-static technology, these belts collect dust with high-efficiency to maintain a cleaner work environment. Convenient packaging keeps them protected during transport and makes them easy to store.