Create a cleaner working environment when you use the ProSand Multi-Air Cyclone H831 coarse grit center hole vacuum disc to blend, sand or dry strip aluminum, fiberglass and composites, as well as hard and soft woods. Long-lasting, self-sharpening zirconia alumina grain works with the disc's spiral-hole vacuum design to remove material as you work, while the tear-resistance of the sturdy and flexible E-weight hook and loop paper backing provides durability. An anti-static coating and open coat make this disc ideal for applications in which you need an aggressive cut and loading is a potential problem.