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.