3 x 24 In. ProSand Cloth Portable Belt 80 Grit R831 ZA Premium, self-sharpening zirconia alumina abrasive provides superior cut on all surfaces, lasts substantially longer, and cuts faster than the next leading competitor in side-by-side comparisons Proprietary patented grain technology produces one of the finest scratch patterns in the industry for finer looking finish Anti-static technology increases dust collection efficiency for cleaner work environment and less clean up Convenient packaging provides easy storage and protection to and from the job site; best choice for coarse grit stock removal applications