Mirka Iridium 5-in. 89-Hole 600 Grit Hook and Loop Sanding Disc, Pack of 50 (24-5MH-600)

The Mirka 24-5MH-600 Iridium 5 in. Grip 89-Hole Sanding Disc is a hook and loop sanding disc made for fine sanding and surface preparation. This is a sanding disc designed for finishing work and controlled material removal on compatible sanders. Model Number: 24-5MH-600. With a 5 inch diameter, 600 grit abrasive, and 89-hole dust extraction pattern, it is aimed at users who want a cleaner sanding setup and a more consistent finish.

The big story here is the combination of fine grit and aggressive dust control. A 600 grit disc is not for hogging material off quickly. It is for refining the surface, cleaning up the scratch pattern from earlier sanding steps, and getting closer to paint, stain, or final finish prep. The 89-hole pattern matters because better dust removal helps the abrasive stay more open, which can support more even cutting and a cleaner working surface.

Mirka’s Iridium line is widely associated with sanding efficiency, and this specific version is set up around the common 5 inch disc format with grip backing. That grip style makes disc swaps quick and straightforward, especially when you are stepping through grits during bodywork, woodworking, finishing, or general prep work. If you change abrasives often, that simple attachment method saves time without complicating the setup.

This disc is sold in a pack of 50, which makes sense for shop use or repeat production work where you do not want to run short in the middle of a sanding sequence. It is a practical count for pros, finish carpenters, refinishers, and serious DIY users who burn through consumables regularly. The 5 inch size also fits the format a lot of users already keep in rotation for random orbital sanding tasks.

For real-world use, the 89-hole layout is the detail that stands out most beyond the grit itself. Better dust extraction can mean less loading, better visibility on the surface, and less time dealing with loose sanding dust. That matters whether you are smoothing wood, prepping filler, or refining a previously sanded surface before the next step.

If you already use Mirka sanding gear or any setup built around 5 inch grip discs with matching hole patterns, this is the kind of abrasive that fills the fine-finish end of the lineup. It is best for users who care about finish quality, clean sanding, and staying organized with a pack quantity that is ready for steady shop use.

Mirka 24-5MH-600 Iridium 5 in. Grip 89-Hole Sanding Disc for clean finishing work

If you are at the stage where the finish matters, this is the kind of disc that makes sense: fine grit, quick grip attachment, and a hole pattern built to help keep dust under control.

• Who it’s for: Woodworkers, finish guys, refinishers, and serious DIY users doing fine sanding or surface prep before the next finishing step.
• Why it stands out: The 600 grit and 89-hole design put it squarely in the clean, controlled finish-prep category instead of rough stock removal.
• Worth knowing: This is a 50-pack of discs, not a sander, and it is best used on compatible 5 inch grip-style pads with the right hole pattern.

• What type of abrasive is this? This is a 5 inch grip or hook and loop sanding disc.
• What grit is it? It is a 600 grit disc intended for fine sanding and surface refinement.
• How many holes does it have? It uses an 89-hole pattern.
• Where is it made? Source data lists Finland as the country of origin.