Mirka Q.SILVER 6" PSA is a 6-inch adhesive-backed sanding disc for stock removal and surface preparation. This is a sanding disc designed for sanding, stripping, and prep work across metal, wood, plastics, fillers, primers, and painted surfaces. Model Number: 2B-342-150. In this version, the disc uses P150 grit, which puts it in a useful middle ground for smoothing and refining after rougher prep without jumping straight to fine finishing.

What matters here is how broad the application range is. Mirka lists this abrasive for steel, mild steel, stainless steel, hardwood, veneer, plastics, primer, paint removal, body filler, lacquer, MDF or HDF, and solid surface materials. That makes it a good fit for body shop prep, woodworking cleanup, painted surface work, and general sanding where you do not want to keep switching product lines just because the material changed.

The backing matters too. Mirka calls out a flexible, strong latex paper construction, which is important because cheaper paper discs tend to crack, curl, or wear unevenly once heat builds up. A more durable paper backing helps the abrasive stay flatter in use and hold up better when you are sanding edges, contours, or larger areas for extended periods.

Heat resistance is another practical advantage. Sanding generates heat fast, especially on metal, coatings, and fillers. Higher heat endurance helps the disc maintain cut and stay usable longer instead of loading up or wearing out too early. For anyone doing repeated prep work, that translates into fewer disc changes and more consistent material removal.

The P150 grit size is a smart working grit for technicians and woodworkers who need a disc that can still remove material but leaves a more controlled scratch pattern than coarse grits. It is a solid choice for refining filler, preparing primer, smoothing wood before the next grit, or knocking down coatings without getting overly aggressive.

This Mirka abrasive is sold in a 100-piece pack, so it makes sense for users who go through discs regularly rather than someone buying a single-sheet solution. If you already run a pressure-sensitive adhesive sanding setup, this is the kind of consumable that earns its keep by covering a lot of materials and keeping the cut consistent.

Who should buy it? Auto body techs, painters, woodworkers, cabinet shops, refinishers, and serious DIY users who want a dependable 6-inch sanding disc for prep and intermediate sanding. If your work moves between filler, primer, steel, hardwood, and painted surfaces, the Mirka Q.SILVER 6" PSA makes a lot of sense because it is built for that kind of mixed-material workload.

Mirka Q.SILVER 6" PSA Is a Workhorse Abrasive

If you burn through sanding discs every week, this is the kind of abrasive that makes sense because it cuts fast, handles heat well, and works across a lot of materials without needing a special disc for every task.

• Who it's for: Auto body techs, woodworkers, painters, refinishers, and serious DIY users running 6-inch pressure-sensitive adhesive sanding setups.
• Why it stands out: The flexible latex paper backing, broad material range, and practical P150 grit make it useful for real prep work instead of just one narrow application.
• Worth knowing: This is a 100-pack consumable, so it is best for people who already know they like the pressure-sensitive adhesive disc format and need steady shop supply.

• What grit is this version? This specific part number, 2B-342-150, is P150 grit.
• What materials can it be used on? Mirka lists steel, mild steel, stainless steel, hardwood, veneer, plastics, primer, paint removal, body filler, lacquers, MDF or HDF, and solid surface materials.
• How many discs come in a pack? This pack includes 100 sanding discs.
• What type of backing does it use? It uses pressure-sensitive adhesive backing on a latex paper disc.