POWERTEC Aluminum Oxide Sanding Discs fast-breaking, expeditious, high and homogenous cutting for sanding jobs that require tear impervious material and durability. These developed -- strength sanding accessories are of payment aluminum oxide grain, and backed with the highest-quality pressure-sensitive glutinous. A marvelous value, you will be with the results you achieve with these stalwart, true and efficacious sanding discs. We to guarantee that your sanding work is always summit grade and hassle unrestrained ! .