POWERTEC Aluminum Oxide Sanding Discs offers fast, efficient, sharp and uniform cutting for sanding jobs that require tear resistant material and durability. Used on stationary disc sanders or random orbit sanders, these industrial-strength sanding accessories are constructed of premium, heat-treated aluminum oxide grain and backed with the highest-quality pressure-sensitive adhesive which keeps the discs from flying off during use. A terrific value, you will be thrilled with the results you achieve with these sturdy, dependable and effective sanding discs. We aim to make sure that your sanding work is always top grade and hassle free【SPECIFICATIONS: Disc Size: 6-Inch, Grit Size: 60/80/100/120/180/240,. Material: Aluminum Oxide (A/O) Grain, Package: 20 pcs of each grits , 120 PK 】.