Mirka 23-379-080 6-Inch No-Hole 80 Grit Adhesive Sanding Discs, 100-Pack is a 6 inch pressure sensitive adhesive sanding disc pack made for surface prep, sanding, and material removal. This is a sanding disc designed for general sanding and finish prep on wood, coatings, fillers, plastics, and non-ferrous metals. Model Number: 23-379-080. If you run a sander that takes PSA discs, this gives you a straightforward 80 grit option in bulk.

The main thing that matters here is the abrasive itself. Source data calls out a sharp, durable aluminum oxide grain, which is a proven choice when you need a disc that cuts consistently and holds up through repeat sanding cycles. In practical terms, that means less time fighting a dull disc when you are knocking down filler, stripping paint, leveling primer, or prepping hardwood before moving to finer grits.

This Mirka sanding disc is a no-hole design, so it is built for applications where a solid face disc is the right match. The 6 inch diameter fits sanders set up for 6 inch PSA paper, and the adhesive backing is the key difference versus hook and loop sanding discs. If your machine is set up for stick-on discs, PSA keeps the attachment simple and secure.

For shop work, the 80 grit rating lands in a useful middle zone for aggressive prep without being as coarse as a heavy stripping grit. It is a practical choice for body filler, primer, paint sanding, plaster and filler, veneer, chipboard, hardwood, soft or resinous wood, lacquers, plastics, and synthetic materials based on the source data. That makes this a versatile sanding disc for automotive prep, woodworking, finishing, and general repair work.

Mirka also notes a bonded construction with aluminum oxide abrasive. The benefit there is durability and a predictable cut, especially when you are working through a box over multiple jobs. A 100-piece box is the right format for users who burn through abrasives regularly, whether that is in a cabinet shop, body shop, or a serious home garage.

Compatibility matters with abrasive discs, and this one is not universal. It is for 6 inch PSA setups, not hook and loop pads. Source data also notes fitment for Porter Cable 7336 and 337 with a holed pad, but the important buying check is still the backing style on your machine. If your tool takes 6 inch adhesive-backed discs, this is the right category. If your tool requires hook and loop attachment, this is the wrong disc.

Who should buy it? Anyone who already knows they need a 6 inch PSA sanding disc and wants a bulk box from a known abrasive brand. It makes the most sense for painters, body and finish prep users, woodworkers, and repair shops that need steady cutting performance on common prep materials. If you only sand occasionally, a smaller pack may be enough. If you go through discs every week, the 100-pack is the better buy.

Mirka 23-379-080 6-Inch No-Hole 80 Grit Adhesive Sanding Discs, 100-Pack is the right buy when you already know you need PSA discs

This is a no-nonsense bulk sanding disc pack for users who care more about steady cutting and correct fitment than fancy packaging.

• Who it's for: Shops, finish prep users, woodworkers, and body repair guys running a 6 inch PSA sander.
• Why it stands out: Aluminum oxide abrasive, a practical 80 grit, and a full 100-count box from a brand that knows abrasives.
• Worth knowing: The backing style is the whole game here. If your sander takes hook and loop discs, keep moving. If it takes stick-on PSA paper, this is a solid workhorse option.

• What kind of backing do these sanding discs use? These use pressure sensitive adhesive backing, also called PSA or stick-on backing.
• Are these hook and loop sanding discs? No. Source data identifies them as adhesive sanding discs, so they are not hook and loop discs.
• What grit are these Mirka discs? They are 80 grit discs.
• What materials are they suited for? Source data lists wood, paint, primer, body filler, plaster and filler, plastics, synthetic materials, veneer, chipboard, lacquers, and non-ferrous metals such as brass and bronze.