Mirka 5-Hole PSA Vacuum Sanding Disc, 580G (23-321-080)

The Mirka 23-321-080 5 Hole PSA Vac Disc 580g is a sanding disc for fine finishing work. This is a sanding disc designed for surface preparation and finish sanding on compatible power sanders. Model Number: 23-321-080. If you are trying to clean up a surface without getting overly aggressive, the 580 grit matters because it is meant for the later stages of sanding where surface quality counts more than fast stock removal.

The main thing that stands out here is the combination of very fine grit and a 5-hole vacuum pattern. In real use, that means this abrasive is better suited to controlled finishing passes than rough leveling. The dust-extraction pattern helps keep sanding debris moving away from the face of the disc, which can improve consistency and help the abrasive stay usable longer during fine surface work.

The product name identifies this as a PSA vac disc. That matters because attachment style and hole pattern are what determine whether a sanding disc actually works with your machine. On abrasives, fit is just as important as grit. A disc with the right sanding grade but the wrong backing or hole layout slows the job down fast, so this Mirka disc is best treated as a replacement abrasive for users who already know the required disc format for their sander or sanding pad.

For shop and jobsite use, a fine-grit vacuum-ready disc is typically chosen when surface cleanliness and finish quality are the priority. That can include prep between coats, light correction work, or refining a previously sanded surface before paint, stain, sealer, or polish. The dust-extraction layout supports cleaner sanding, which is a practical benefit if you are working indoors, in a finishing area, or on materials where loose dust can interfere with the next step.

This Mirka abrasive makes the most sense for painters, finish carpenters, woodworkers, refinishers, and serious DIY users who are already working with compatible disc sanders and want a very fine sanding disc instead of a general-purpose grit. If your job calls for shaping, stripping, or fast material removal, this is not the disc for that. If your job calls for refinement, cleanup, and a lighter finishing touch, it is much more in its lane.

Fine grit for the last passes, not the first ones

The Mirka 23-321-080 5 Hole PSA Vac Disc 580g is the kind of abrasive you buy when finish quality matters more than brute-force sanding speed.

• Who it's for: Woodworkers, painters, refinishers, and detail-focused DIY users doing final sanding or surface refinement on compatible sanders.
• Why it stands out: The 580 grit and 5-hole vacuum layout point it toward cleaner, lighter finishing work where dust control and surface quality matter.
• Worth knowing: Make sure your sander or backup pad matches the PSA attachment style and 5-hole pattern before ordering, because abrasives are only useful when the fit is right.

• What kind of product is this? It is a Mirka sanding disc intended for use with a compatible power sander or sanding system.
• What grit is it? This disc is listed as 580 grit, which places it in the fine-finishing range.
• Does it support dust extraction? Yes. The product name identifies it as a 5-hole vac disc, which indicates a hole pattern intended for vacuum-assisted dust removal on compatible setups.
• What should I verify before buying? Check that your sander or pad matches the disc's attachment style and 5-hole layout, since fitment is critical for sanding discs.