The Mirka 23-332-120 Gold PSA Sanding Disc is a 5-inch P120 adhesive-backed sanding disc pack built for finish sanding and material removal. This is a PSA sanding disc pack designed for sanding wood, metal, and composite materials. Model Number 23-332-120. If you need a practical shop-stock abrasive for repeat prep work, this one is aimed at that job.

What matters here is the balance of cut, life, and consistency. The P120 grit is fine enough for controlled surface prep but still aggressive enough to move material at a good pace. That makes it a solid choice when you are refining a surface after rougher sanding or getting parts ready for the next finishing step.

Mirka uses durable aluminum oxide grain in this disc, and that matters because abrasive quality shows up fast in the real world. Better grain keeps cutting longer, stays more uniform across the disc, and helps avoid the uneven results you get from bargain abrasives that fall off early or load up too fast.

The Gold series is also built with a special stearate coating to help resist clogging and loading. On the job, that means better disc life and less wasted time swapping discs just because dust and residue have packed the surface. The semi-open coating is there for the same reason: more consistent sanding and a more even scratch pattern.

Mirka also calls out a stronger patented backing and a heavy-duty resin bond. That combination is important on sanding discs because the backing has to stay intact under pressure, heat, and repeated use. A stronger backing helps the disc hold together and stay usable when you are working through larger batches of panels, trim, metal parts, or composite surfaces.

This Mirka sanding disc pack is a good fit for body shop prep, woodworking, fabrication, refinishing, and general shop sanding where 5-inch PSA discs are already part of the workflow. If you run adhesive-backed disc sanders and want a dependable 120-grit disc in bulk, this is the kind of consumable that earns its shelf space.

Mirka 23-332-120 Gold PSA Sanding Disc Is a Smart Stock-Up Abrasive

If you burn through 5-inch discs regularly, this is the kind of dependable 120-grit abrasive that makes your sanding setup work better without drama.

• Who it's for: Woodworkers, refinishers, fabricators, and shop users who need a 5-inch PSA sanding disc for steady prep work on wood, metal, or composites.
• Why it stands out: The stronger backing, aluminum oxide grain, and anti-loading stearate treatment are the details that usually separate a decent sanding disc from one that actually lasts.
• Worth knowing: This is a 100-pack of P120 PSA discs, so it makes the most sense if your sander uses adhesive-backed 5-inch discs and you already know 120 grit fits your sanding sequence.

• What grit is this Mirka disc? It is P120 grit, which is commonly used for general surface prep and intermediate sanding.
• What materials can it be used on? Source data lists wood, metal, and composites as compatible materials.
• How many discs come in the box? This pack includes 100 sanding discs.
• What size are the discs? Each disc is 5 inches in diameter.