The Mirka 23-612-036 Grip Disc is a heavy-duty 5 inch abrasive disc built for aggressive sanding and material removal. This is a sanding disc designed for heavy stock removal, stripping, and surface preparation. Model Number: 23-612-036. If you need a coarse disc that gets through rough material quickly instead of polishing around it, this is the kind of grit you reach for first.

With a P36 grit rating, this disc is aimed at the front end of the sanding process where speed matters more than finish quality. That makes it a practical choice for knocking down rough wood, removing old coatings, leveling filler, and cleaning up surfaces before stepping to finer grits. On the job, that means less time leaning on the sander and more time actually moving through the prep sequence.

Mirka uses aluminum oxide abrasive on this disc, which is a dependable all-around material for general sanding work. It gives you a good mix of cut rate and disc life without forcing you into a specialty abrasive when the job just needs solid removal and consistent performance. The semi open coat design also matters because it helps the disc stay more usable during heavier sanding tasks where loading can slow you down.

The backing is listed as heavy duty C-weight paper, which tells you this disc is built for tougher sanding than light finish work. That heavier paper backing helps the disc hold up when you are leaning into rough prep, edge cleanup, or broad surface sanding with a random orbit sander. It is the right kind of build for users who burn through cheap discs and want something better suited to real shop or site use.

This Mirka Gold series sanding disc comes in a 50-pack, which makes sense for anybody who sands regularly and does not want to keep stopping to reorder consumables. That is especially useful in cabinet shops, body prep work, remodeling, and general woodworking where coarse discs get used up quickly because they are doing the hardest part of the job.

The best fit for this disc is the user who needs a reliable 5 inch sanding disc for surface prep, coating removal, and rough shaping work. Pros will appreciate that it is a straightforward abrasive that gets after the material. Serious DIYers will like that it is not a gimmick product, just a coarse, heavy-duty Mirka disc made to do the ugly part of sanding efficiently before the finish passes begin.

Mirka 23-612-036 Grip Disc for the ugly part of sanding

If your job starts with rough material, old finish, or filler that needs to come down fast, this is the kind of coarse Mirka disc that earns its keep.

• Who it's for: Woodworkers, remodelers, finish prep crews, and serious DIY users running a 5 inch sander for aggressive sanding work.
• Why it stands out: P36 grit, aluminum oxide abrasive, and heavy-duty C-weight paper backing give it the right setup for real stock removal instead of light cleanup.
• Worth knowing: This is a coarse disc meant for the first sanding passes. Plan on following it with finer grits if you need a cleaner finish.

• What kind of sanding is this disc best for? It is best for aggressive sanding, stock removal, stripping, and rough surface preparation where a coarse P36 grit makes sense.
• What abrasive material does it use? This disc uses aluminum oxide abrasive.
• How many discs come in a box? The package quantity is 50 discs.
• Where is it made? The listed country of origin is Finland.