? Cloth Narrow Benchstand Belt,Narrow Belts ? Cut quickly and aggressively with the strong, self-sharpening zirconia alumina abrasive on the BlueFire R801/R821P/R823P/R884P coarse grit cloth narrow benchstand belt. Choose the flexible X-weight waterproof polyester backing for light- to moderate-pressure needs. The R801 and R884P both feature Y-weight waterproof polyester cloth backing ideal for medium- and high-pressure applications. With a lubricating grinding aid, the R801 belts deliver cooler cuts, minimal loading and grinding without burns on heat-sensitive materials for exceptional results. This belt delivers the results you want on your demanding coarse grit stock removal projects. ? Strong, self-sharpening zirconia alumina abrasive for fast, aggressive cut and 30% longer life than competitive zirconia belts ? R823 has flexible X-weight polyester waterproof backing to excel on light- to moderate-pressure, applications; R801 and R884P have durable Y-weight polyester waterproof cloth backing that excels on medium- to high pressure applications ? The lubricating grinding aid in R801 belts, means cooler cut, burn-free grinding of heat-sensitive materials, and minimized loading ? Better choice for demanding coarse grit stock removal applications ? 36-80 grit recommended for roughing to intermediate applications