Mirka 23-341-040 Bulldog Gold Heavy Duty PSA Disc is a 6 inch pressure sensitive adhesive sanding disc made for aggressive sanding and surface preparation. This is a sanding disc designed for heavy material removal on wood, metal, composites, marine surfaces, and automotive refinishing work. Model Number: 23-341-040.

The key number here is P40 grit. That puts this disc in the coarse end of the sanding range, which matters when you need to move fast, knock down rough surfaces, strip finishes, or prep material before stepping through finer grits. If you are trying to level filler, remove stock, or break down a rough surface before finish sanding, this is the kind of disc you reach for first.

Mirka uses aluminum oxide abrasive on a coated paper backing, which gives this disc a practical mix of durability, consistent cut, and value for day-to-day shop use. The Bulldog Gold line is built for high-speed sanding, and the semi-open grain structure with special stearate coating called out in the source data is there for a reason: it helps reduce loading and clogging so the abrasive keeps cutting instead of polishing over packed dust.

The pressure sensitive adhesive backing gives you a direct, secure mount to the right sanding pad. That matters when you want full disc contact and predictable tracking across flat surfaces. This version is a no-hole disc, so it is aimed at setups that do not rely on hole-pattern dust extraction through the disc itself.

At 6 inches in diameter, this disc fits common sanding applications where you want broad surface coverage without stepping up to a larger production-size abrasive. It is well suited for users who need an abrasive that can cross between trades instead of being locked into one narrow use. The source data specifically points to automotive refinishing, woodworking, metal processing, marine work, and composite applications, which is a pretty strong indicator of where this disc earns its keep.

This pack includes 50 discs, so it makes sense for shops and serious users who burn through abrasives regularly and do not want to reorder every few jobs. If you are a body tech, cabinet shop worker, marine repair tech, metal fabricator, or serious DIY user doing real prep work, this Mirka sanding disc is the right kind of coarse abrasive to keep on hand.

Mirka 23-341-040 Bulldog Gold Heavy Duty PSA Disc Gets Straight to Work

If you need a coarse 6 inch PSA sanding disc that cuts fast and holds up across different materials, this is the kind of shop staple that makes sense.

• Who it's for: Body shops, woodworkers, marine repair techs, metal fabricators, and serious DIY users doing real prep work.
• Why it stands out: You get P40 cut speed, aluminum oxide durability, and a 50-pack from a sanding brand that knows abrasive performance.
• Worth knowing: This is a no-hole PSA disc, so make sure your sanding setup is built for adhesive-backed 6 inch discs and does not require a hole pattern through the abrasive.

• What grit is this disc? It is a P40 abrasive disc, which is a coarse grit used for aggressive sanding and fast material removal.
• What size is the disc? The disc diameter is 6 inches.
• Does this disc have vacuum holes? No. The source data lists this as a no-hole disc.
• What is the abrasive made from? It uses aluminum oxide abrasive on a paper backing.
• What kinds of work is it suited for? The source data lists automotive refinishing, woodworking, metal processing, marine work, and composite applications.