Product details:
Joest drywall sanding products have holes throughout the surface that allow the dust to easily escape and Eliminate Load-up. Because you will not have dust particles clogging up your disc, you can now see the full potential abrasive life of the disc. Perforation allows the sheet to last longer and provide a higher level of finish. Dust is extracted through the perforations in a congestion-free-flow - not just at the edges of the sander, but over the entire surface.