POWERTEC Aluminum Oxide Sanding Discs quick, economical, unpleasant and homogeneous cutting for sanding jobs that require tear impervious material and durability. These industrial -- strength sanding accessories are of payment aluminum oxide grain, and backed with the highest-quality pressure-sensitive gluey. A marvelous value, you will be with the results you achieve with these stalwart, tried and true and telling sanding discs. We to guarantee that your sanding work is always acme grade and hassle unrestricted ! .