Mirka Basecut 6-in. 80 Grit PSA Sanding Discs 100-Pack for Orbital Sanders (20-342-080)

Mirka Basecut 6 in Sandpaper 80 Grit PSA Linkroll 100 pcs Adhesive Sanding Discs is a paper-backed abrasive disc roll for orbital sanding. This is a sanding disc designed for surface preparation, stock removal, and finish removal on wood, fillers, plastics, and coated surfaces. Model Number: 20-342-080. If you need a value-focused abrasive that still cuts hard right out of the gate, this one is built to keep material moving without overcomplicating the job.

The big selling point here is the cut. Mirka lists Basecut as an economical, high-efficiency choice with a high initial aggressive cut, and that matters when you are knocking down body filler, stripping old paint, or flattening rough wood before moving to finer grits. At 80 grit, this disc sits in the coarse range, so it is aimed at early-stage prep work rather than final finishing.

The disc size is 6 inches / 150 mm, which is a common working size for orbital sanders in shops and jobsite finishing setups. The PSA adhesive backing is the other practical part of the story. Instead of a hook and loop attachment, this uses pressure-sensitive adhesive for a firm hold on the pad. That direct bond can be a good fit when you want consistent contact and are running through discs steadily during repetitive sanding work.

Mirka uses aluminum oxide grain with a paper backing, resin over resin bonding, and a semi-open coating. In plain terms, that gives you a familiar abrasive build for general-purpose sanding across a wide range of materials. It is not locked into one narrow task. Source data specifically calls out use on lacquers, paint removal, plaster, putty, plastic, wood, glass fibre, chipboard, veneer, body filler, hardwood, and soft or resinous wood.

The no-hole configuration is important to note before you buy. These discs are meant for pads that do not require dust extraction holes lined up through the abrasive. If your sander relies on a hole pattern for dust collection through the pad, this is not the version to grab. If you are working with a solid pad setup, the no-hole disc keeps things simple.

Packaging also matters on consumables, and this one comes as a 100-piece Linkroll. That is useful in a busy automotive, wood, or marine shop because you can keep a lot of the same grit ready to go without opening and stacking loose sleeves all over the bench. It is a straightforward way to stay stocked when a coarse grit is part of your normal prep sequence.

As for who should buy it, this Mirka sanding disc makes the most sense for automotive refinish work, wood finishing prep, marine finishing prep, and general surface correction where you need coarse removal more than finesse. Pros who burn through abrasive and serious DIY users who want dependable discs in bulk will get the most value here. If your main need is fast surface prep on an orbital sander with PSA attachment, this is right in its lane.

Mirka Basecut 6 in Sandpaper 80 Grit PSA Linkroll Gets Right to the Point

This is the kind of abrasive you buy when the job calls for material removal first and pretty later.

• Who it’s for: Shops and serious users doing automotive prep, wood sanding, marine refinishing, or filler and paint removal with a 6 inch PSA orbital sander setup.
• Why it stands out: You get Mirka quality in a straightforward 100-count Linkroll with an aggressive 80 grit cut, aluminum oxide abrasive, and a simple stick-on disc format.
• Worth knowing: This is a no-hole disc, so make sure your pad matches. It is a great fit for the right setup, but not the disc to force onto a dust-hole system that needs alignment.

• What type of sander is this designed for? It is listed as compatible with an orbital sander using 6 inch PSA adhesive discs.
• Does this disc have dust extraction holes? No. The source data specifies a no-hole configuration.
• What materials can it sand? Source data lists wood, plastics, lacquers, plaster, putty, paint, body filler, glass fibre, veneer, chipboard, and similar prep materials.
• Is this a fine finishing grit? No. At 80 grit, this is a coarse abrasive intended more for removal and early prep than final finish sanding.