Mirka Bulldog Gold 5-in. 150 Grit PSA Sanding Discs, No-Hole 100-Pack (23-332-150)

The Mirka 23-332-150 5 inch Bulldog Gold No-Hole 150 Grit PSA Sanding Discs is a pressure sensitive adhesive sanding disc pack made for finishing and heavy stock removal. This is a sanding disc designed for surface preparation, finish sanding, and consistent material removal. Model Number: 23-332-150. If you need a box of 5 inch PSA discs that cut fast and keep the scratch pattern even, this one is built for exactly that kind of work.

What matters here is the balance between cut speed and finish quality. Mirka rates Bulldog Gold for both finishing and heavy stock removal, which tells you these discs are not just for light touch-up work. The 150 grit lands in a useful middle ground for refining surfaces without getting overly aggressive, so it works well when you need to clean up material, flatten a surface, or move toward a ready-to-finish stage.

The abrasive material is aluminum oxide, which is a proven choice for long-lasting sanding performance. In practical terms, that means the disc keeps cutting instead of dulling out right away. Mirka also calls out high strength resin bonding for better grain support, which matters because it helps the abrasive stay in place under pressure. If you lean on a disc during stock removal, that backing support and bond strength are what help it hold up.

Another important part of this disc is the semi-open coat design. That layout is intended to produce a more even, consistent scratch pattern across the work surface. For the user, that means less random digging and less time spent chasing uneven sanding marks later. Mirka also notes a stearate coating to resist clogging and loading, which is a real benefit when you are working through jobs that can quickly gum up a standard sanding disc.

The no-hole layout makes this a straightforward choice for setups that use solid-face PSA discs rather than hole-pattern dust extraction discs. The pressure sensitive adhesive backing is simple and secure, which speeds up disc changes and keeps the abrasive planted during sanding. For shop work, prep work, and repeat cycles, that kind of fast swap matters because it keeps the tool moving instead of wasting time at the bench.

This Mirka sanding disc pack is best for users who already know they want a 5 inch PSA disc in 150 grit and need quantity, consistency, and reliable cut quality. It makes sense for body shops, woodworkers, finish prep work, and general sanding applications where surface quality matters as much as removal rate. If you go through discs regularly and want a known abrasive line with a full 100-disc box, this is the practical buy.

Bulk sanding discs that actually make sense for real work

The Mirka 23-332-150 5 inch Bulldog Gold No-Hole 150 Grit PSA Sanding Discs is the kind of abrasive pack you buy when you want steady cut quality, easy PSA changes, and enough discs on hand to keep working.

• Who it's for: Anyone doing repeat sanding work who needs 5 inch PSA discs for finishing, prep, and moderate material removal.
• Why it stands out: The aluminum oxide abrasive, resin bonding, anti-loading stearate coating, and semi-open coat design all work together to cut clean and stay useful longer.
• Worth knowing: This is a no-hole disc, so make sure that matches your setup before you order. If your machine depends on a specific hole pattern for dust collection, that matters.

• What grit are these sanding discs? These discs are 150 grit.
• What size are these discs? Each disc is 5 inches in diameter.
• What abrasive material is used? They use aluminum oxide abrasive.
• Do these discs have dust extraction holes? No. This is a no-hole sanding disc.
• What type of backing do they use? They use a pressure sensitive adhesive, or PSA, backing.