The Mirka Quick Disc CER Ø 50 mm quick lock disc, Model 8090505050, is a ceramic abrasive disc made for fast grinding and stock removal. This is a quick lock disc designed for aggressive material removal on small-area grinding jobs. In this P50 version, it is a good fit for users who need a coarse, hard-cutting abrasive that changes out quickly and holds up under heavier use.

What makes this disc matter is the abrasive itself. Mirka uses self-sharpening ceramic grains, which helps the disc stay productive longer as it wears. Instead of fading quickly after the first stretch of use, it is built to keep cutting with consistent bite. If you are cleaning up welds, knocking down material, or doing general grinding where removal rate matters, that translates directly into less time leaning on the tool.

The disc also uses a top size and medium-closed coating. In practical terms, that helps reduce heat in the grinding zone. Less heat means a lower chance of burn marks on the workpiece, which is especially useful when you are trying to remove material without cooking the surface underneath. That is one of those details that sounds small on paper but makes a real difference when you are working longer passes or on heat-sensitive material.

Backing matters on small abrasive discs, and Mirka specifies a Y Polyester backing here. That gives the disc the durability needed for tougher grinding work while helping it resist wear over time. For the buyer, that means better disc life and a more stable feel when the abrasive is loaded up and working hard. On a small-format disc, durability is a big deal because these are often used where precision and access matter just as much as raw removal rate.

The quick lock design is another real-world advantage. If you are cycling through worn discs during surface prep or detail grinding, fast attachment changes save time and keep the job moving. This Mirka abrasive disc is also specifically noted as suitable for the Mirka ANGOS ARG-B platform, so it is not just a generic small disc. It is meant to work within that system for users who need compact grinding performance.

Who should buy it? This disc makes the most sense for metalworking, fabrication, repair work, and detail grinding where a compact ceramic quick lock disc is the right answer. If you already run a Mirka ANGOS ARG-B and want a coarse 50 mm abrasive for high stock removal, this is the kind of consumable that earns its keep by cutting fast, running cooler, and lasting longer than bargain-bin discs.

Mirka Quick Disc CER Ø 50 mm Is the Right Small Disc When Removal Rate Matters

If you need a compact grinding disc that cuts hard, swaps fast, and does not quit early, this one makes a lot of sense.

• Who it's for: Users running a Mirka ANGOS ARG-B for detail grinding, metal cleanup, and aggressive surface prep in tighter spots.
• Why it stands out: The ceramic grain, heat-reducing coating, and Y Polyester backing give it the mix you want for fast stock removal and better wear life.
• Worth knowing: This is a coarse P50 abrasive disc, so it is built for removal first, not finish work. Plan on following with finer grits if surface quality matters.

• What type of abrasive does this disc use? It uses self-sharpening ceramic grains.
• What grit is this version? This SKU is the P50 version.
• What tool is it suitable for? Mirka lists it as suitable for the Mirka ANGOS ARG-B.
• What is the disc diameter? The disc diameter is 50 mm.