The Mirka 23-332-100 PSA Disc is a 5 inch P100 coated abrasive disc sold in a 100-pack for sanding and surface prep. This is a PSA sanding disc designed for material removal and surface finishing on wood, metal, and composites. Model Number: 23-332-100. If you need a dependable paper-backed sanding disc for shop use, refinish work, or general prep, this one is built around a practical grit, a common diameter, and a simple adhesive mounting system.

The big selling point here is the balance of aggressiveness and control. P100 grit is a solid choice when you need to knock down surface imperfections, remove material at a useful pace, or step into a finishing sequence without going overly coarse. On the job, that means less time fighting a disc that cuts too slowly and less cleanup from a grit that leaves a deeper-than-needed scratch.

Mirka uses aluminum oxide abrasive on this disc, which matters because it is one of the most proven abrasive materials for everyday sanding across different materials. For the buyer, that translates to versatility. Whether you are working wood parts, metal surfaces, or composite materials, this abrasive type is a safe, practical pick for general-purpose sanding where consistent cut and usable disc life matter more than gimmicks.

This Bulldog Gold-23 series disc uses a paper backing and a pressure sensitive adhesive backing style. PSA discs are straightforward: peel, stick, run, and replace. That setup makes sense for users who want secure attachment and a smooth face-to-pad contact without dealing with hook and loop wear. If your process is repetitive and you use dedicated pads, PSA can be a clean, reliable system.

Another important detail is the no-hole design. That is not a minor spec. It means this disc is intended for sanding setups that do not rely on a dust-extraction hole pattern through the abrasive. If your pad is built around vacuum extraction, you need to pay attention here. If you are using a solid-face PSA pad, though, the no-hole design gives you full abrasive coverage across the disc face.

The 5 inch diameter keeps this Mirka sanding disc in a very common size class, which is useful for body shop work, general finishing, and bench sanding tasks where control matters as much as speed. A 100-count box also makes this a better fit for serious users than occasional one-off buyers. You are buying for workflow, not just for one job.

Who should buy it? This is a strong fit for painters, refinishers, woodworkers, automotive techs, and serious DIY users who already run 5 inch PSA sanding setups and need a dependable P100 disc in quantity. If you want a disc for general sanding, prep, and material removal with straightforward adhesive mounting, the Mirka 23-332-100 PSA Disc makes sense. If you need vacuum-hole alignment or hook-and-loop attachment, this is the point where you should look at a different disc style.

Mirka 23-332-100 PSA Disc Is a Solid Shop Staple

If you already run a 5 inch PSA setup, this is the kind of sanding disc you keep on hand because it covers a lot of real work without overthinking it.

• Who it's for: Refinishers, woodworkers, automotive users, and serious DIYers who need a 5 inch P100 abrasive disc in box quantity.
• Why it stands out: The combination of aluminum oxide grain, a common 5 inch size, and a 100-pack format makes it practical for everyday prep and sanding work.
• Worth knowing: This is a PSA, no-hole disc. Great if that matches your pad. Wrong pick if your setup needs hook-and-loop or dust-extraction holes.

• What grit is this disc? This disc is P100 grit.
• Does this disc have vacuum holes? No. It uses a no-hole design.
• What backing style does it use? It uses pressure sensitive adhesive, also called PSA backing.
• What materials can it be used on? Source data lists wood, metal, and composites as compatible materials.
• How many discs come in a box? The package quantity is 100 discs.