The Mirka 40-352-080 Coarse Cut 8 Inch PSA Sanding Disc is a pressure sensitive adhesive sanding disc built for coarse sanding and surface preparation. This is a sanding disc designed for material removal and early-stage finishing work. Model Number 40-352-080. If you need a larger disc for broad surface coverage and fast grit changes on a PSA sanding setup, this is the kind of consumable that keeps the work moving.

The key numbers here are straightforward and useful: an 8 inch diameter, P80 grit, and a package quantity of 50 discs. That combination points to production-minded sanding rather than occasional one-off use. P80 is a coarse grit, so it is better suited to knocking material down, cleaning up rough surfaces, and preparing a workpiece for the next sanding step than it is for finish-ready final passes.

Because this is a PSA disc, it is intended for sanders or backup pads that accept pressure sensitive adhesive abrasives. That matters if you already run a PSA setup and want a disc that mounts directly to that system. It also means you should match it to the right machine and pad style rather than assuming it fits hook and loop tools.

Mirka is well known in abrasive products, and this disc sits in the practical part of the lineup: simple format, job-focused grit, and bulk packaging for steady use. The larger 8 inch size can be a better choice when you are working wider surfaces and want more contact area than a smaller random orbit disc gives you.

This product makes the most sense for users who already know they need an 8 inch PSA abrasive and want a coarse-cut option in shop quantity. That includes professional finish and prep work where consumables get used regularly, as well as serious DIY users working through larger sanding jobs who would rather buy one proper pack than piece together mixed discs.

Bulk Coarse-Cut Discs for Users Who Already Know Their Setup

The Mirka 40-352-080 Coarse Cut 8 Inch PSA Sanding Disc is a smart buy when you need real stock removal in a larger PSA format and do enough sanding to justify a 50-pack.

• Who it's for: Shop users, refinishers, and serious DIYers running an 8 inch PSA sanding setup.
• Why it stands out: You get the right combination of large 8 inch coverage, coarse P80 cut, and pack quantity that fits repeat work.
• Worth knowing: This is a PSA disc, so the fit question is simple: if your tool takes 8 inch PSA abrasives, you are in business. If it uses hook and loop, this is the wrong disc.

• What type of abrasive is this? It is a PSA sanding disc, which means it uses a pressure sensitive adhesive attachment style.
• What size is the disc? The disc diameter is 8 inches.
• What grit is it? This Mirka disc is P80 grit, which is a coarse grade intended for more aggressive sanding than finish sanding.
• Where is it made? Source data lists Finland as the country of origin.