The Mirka Iridium 6 in Grip 121H 800 Hook & Loop Sanding Disc, model 24-6MH-800, is a fine-grit sanding abrasive built for finish sanding and surface refinement. This is a hook and loop sanding disc designed for fine sanding on compatible 6 inch sanders. If you are working through the last stages before paint, clear, or final finish, this grit range is where consistency matters more than brute removal.

What makes this disc matter is the combination of a 6 inch size, grip backing, and 121-hole pattern. The 6 inch format fits a common sander size used in shops and on jobsites, while the hook and loop style makes disc changes quick when you are moving through grit steps. The multi-hole layout is there for a reason: when paired with the right pad and extraction setup, it helps move dust away from the work surface so the abrasive can keep cutting instead of skating over packed debris.

The 800 grit rating puts this Mirka abrasive firmly in the fine-finish category. That means it is not the disc you grab for stripping heavy material or leveling rough stock. It is the one you reach for when the surface is already close and you need to clean up the scratch pattern, blend sanding marks, or prep for the next coating step. On finish work, the difference between an average disc and a consistent disc shows up fast in how even the surface looks and how little rework you need later.

Mirka positions the Iridium line as a premium abrasive option, and the practical benefit is simple: cleaner sanding, easier disc swaps, and a format that fits modern dust-aware sanding setups. The grip backing keeps installation straightforward, and the 121-hole configuration is aimed at users who care about dust collection and surface quality, not just getting material off fast.

This product is sold as a 50-disc box, which is the right format for production work, body shops, cabinet shops, and serious DIY users who already know they will burn through abrasives in a controlled finishing process. Buying by the box also keeps your workflow consistent because you are staying with the same diameter, hole pattern, and grit from start to finish.

If you use a compatible 6 inch hook and loop sander and need a fine sanding disc for finish prep, the Mirka Iridium 6 in Grip 121H 800 Hook & Loop Sanding Disc is the kind of consumable that earns its keep. It is best for users who value dust extraction, repeatable finish quality, and the convenience of a boxed quantity over bargain-bin discs that vary from sheet to sheet.

Mirka Iridium 6 in Grip 121H 800 Hook & Loop Sanding Disc Is a Smart Buy for Finish Work

This is the kind of sanding disc you buy when surface quality matters and you do not want dust working against you.

• Who it's for: Painters, finish carpenters, body shop techs, woodworkers, and serious DIY users doing fine sanding on compatible 6 inch hook and loop sanders.
• Why it stands out: The 121-hole pattern, 800 grit finish focus, and 50-disc box format make it a practical shop consumable instead of a throwaway add-on.
• Worth knowing: This is a fine-grit disc for refinement, not heavy stock removal, so make sure your pad and hole pattern match the abrasive to get the dust collection benefit.

• What type of sander does this disc fit? It is made for compatible 6 inch sanders that use a hook and loop, or grip-style, backing interface.
• What grit is this sanding disc? This disc is 800 grit, which is intended for fine sanding and finish-stage surface prep.
• How many holes does the disc have? It uses a 121-hole pattern for dust extraction on compatible pads and systems.
• Where is it made? The source data lists Finland as the country of origin.