The Mirka Galaxy Sandpaper 6 inch - Grit 800 is a premium PSA sanding disc linkroll built for fine surface finishing. This is a sanding disc designed for refining surfaces and producing a smooth finish on materials like epoxy resin, gelcoat, lacquer, wood, and stainless steel. Model Number: FY-6PF-800. If you need a 6 inch abrasive for detail-oriented sanding work where surface quality matters more than raw stock removal, this is the right kind of disc.

What makes this Mirka abrasive stand out is the ceramic alumina grain and Mirka's self-sharpening approach. In practical terms, that means the cutting surface stays effective longer as the grain fractures during use instead of dulling all at once. For anyone doing finish sanding, that matters because a disc that keeps cutting consistently is easier to control and less likely to leave uneven scratch patterns when you're chasing a uniform surface.

The 800-grit rating puts this disc firmly in the fine finishing category. That makes it a strong fit when you're stepping down visible scratch marks, refining coated surfaces, or working toward a cleaner final prep before polishing or topcoat work. On epoxy resin and gelcoat especially, fine grit selection matters because aggressive abrasives can create more cleanup than progress. This grit is meant for refinement, not hogging off material.

Mirka also calls out a non-clogging anti-adhesive coating, and that is a useful real-world feature for finishing work. Fine abrasives can load up fast when you're sanding coatings, resin, or softer materials. A disc that resists buildup stays more consistent and gives you a cleaner sanding pattern for longer. That usually means fewer premature disc changes and less time fighting surface contamination on the abrasive face.

From a format standpoint, this product uses a PSA backing and comes as a linkroll of 100 no-hole 6 inch discs. PSA discs are a good choice when you want a secure, flat bond to the pad and quick changeover without fuss. The no-hole design is straightforward, but it also means you should match it to the right application and pad setup rather than expecting a dust-extraction hole pattern.

The material range is broad enough to make this more than a one-task abrasive. Source data lists epoxy resin, gelcoat, lacquer, stainless steel, and wood as compatible materials. That gives finishers, fabricators, woodworkers, and anyone doing surface prep a flexible option when they need a fine grit disc that can move between different workpieces without changing product lines every time the material changes.

Who should buy it? This Mirka Galaxy sanding disc makes the most sense for users who already know they need a fine 800-grit PSA disc in volume. It is a smart fit for body and marine finishing, epoxy and resin work, woodworking surface prep, and metal finishing where the goal is surface quality, consistency, and long abrasive life. If you need fast stock removal, move to a coarser grit. If you need a fine finishing disc in a 100-count roll, this one is built for that job.

Mirka Galaxy Sandpaper 6 inch - Grit 800 is for finish work, not shortcuts

This is a smart buy for users who care about surface quality and want a fine PSA abrasive that holds its cut instead of fading halfway through the job.

• Who it's for: Finishers, woodworkers, marine and resin users, and metalworkers who need a true fine-grit sanding disc for refinement work.
• Why it stands out: The ceramic grain, non-clogging coating, and 100-count linkroll format make it practical for real shop use, not just one-off jobs.
• Worth knowing: This is a no-hole PSA disc, so make sure your sander pad matches the attachment style and that you're using it at the right stage of your grit progression.

• What type of abrasive is this? It uses ceramic alumina abrasive with self-sharpening grain behavior.
• What backing does it use? This product uses PSA backing, which is a self-adhesive format.
• What materials can it be used on? Source data lists epoxy resin, gelcoat, lacquer, stainless steel, and wood.
• Is this a dust-extraction disc? No. The product is listed as a no-hole 6 inch disc.