This bundle includes two 10-packs of hook-and-loop 9-inch sandpaper discs compatible with WEN drywall sander models 6369, 6362, and 6377. One pack contains 120-grit discs perfect for material removal and resurfacing. The other contains 80-grit discs ideal for heavy-duty sanding and smoothing. Both feature specially designed dust holes to minimize cleanup. The 120-grit discs offer a fine abrasive texture for smoothing surfaces, while the more aggressive 80-grit discs are intended for removing material. Using both in combination enables you to start with the coarse 80-grit paper for rapid stock removal, then switch to the 120-grit to finely sand the surface to the desired smoothness. The hook-and-loop backing on these discs allows for quick and easy changes, while the hole configuration is made to fit the dust extraction system on compatible WEN models. This keeps the work area cleaner while sanding. With 20 total discs, you'll have plenty of sandpaper for working on large drywall jobs or sanding projects. Pair these long-lasting, high performance discs with your WEN drywall sander to refresh its sanding abilities.