The Mirka IRIDIUM 2.75" x 120' PSA Roll, model 24-584-120, is a pressure-sensitive adhesive abrasive roll built for hand sanding and surface preparation across a wide range of materials. This is a sanding roll designed for surface prep, paint sanding, and filler work. If you need one abrasive format that can cover day-to-day shop tasks without forcing you into pre-cut sheet sizes, this roll makes a lot of sense.

The 2.75 inch width is a practical size for hand sanding blocks and narrow work areas, while the 120 foot roll length gives you the flexibility to cut exactly what you need. That matters when you are working through repeated sanding cycles on body filler, primer, lacquer, hardwood, MDF, or painted parts. Instead of paying for waste or fighting awkward sheet sizes, you pull the length you want and keep moving.

The pressure-sensitive adhesive backing is the real jobsite advantage here. PSA abrasives are quick to mount on a compatible flat sanding block or backing surface, and they stay put during use. For anyone doing controlled hand sanding, edge work, or prep on panels and shaped surfaces, that secure bond helps keep the abrasive flat and consistent instead of shifting around under your hand.

Mirka positions the Iridium line as a broad-use abrasive, and the listed material range backs that up. This sanding roll is suited for mild steel, stainless steel, copper alloys, non-ferrous metals, paint removal, plaster, filler, fiberglass, synthetic materials, chipboard, solid surface materials, composites, veneer, plastics, primer, hardwood, softwood, lacquers, MDF, HDF, and polystyrene. In plain terms, it is the kind of abrasive you keep in the shop when your work jumps from wood to coatings to automotive-style prep.

For buyers choosing grit, 120 is a useful working grade. It is aggressive enough for shaping and leveling many prep surfaces, but not so coarse that it leaves you with a ton of cleanup before the next sanding step. That makes it a smart choice for general surface refinement, blending filler, sanding primer, and getting wood or coated surfaces ready for the next pass.

This Mirka abrasive roll is best suited for auto body techs, painters, finish carpenters, cabinet shops, composite fabricators, and serious DIY users who want clean, cut-to-length abrasive for hand sanding. If your work includes paint prep, body filler, wood surfacing, or mixed-material finishing, the Mirka IRIDIUM 2.75" x 120' PSA Roll gives you a versatile consumable that is easy to size, easy to mount, and easy to keep in rotation.

Mirka IRIDIUM 2.75" x 120' PSA Roll is the kind of shop abrasive that quietly earns its spot

If you do a lot of hand sanding across different materials, this is the sort of abrasive roll that keeps life simple and cuts down waste.

• Who it's for: Body shops, painters, woodworkers, composite shops, and anyone doing regular hand-sanding prep work.
• Why it stands out: The long PSA roll format is practical, easy to size, and versatile across wood, coatings, fillers, plastics, and metal-related prep.
• Worth knowing: This is a consumable roll, not a full sanding kit, so you will want a compatible hand-sanding block or backing surface for the cleanest results.

• What type of product is this? It is a PSA abrasive sanding roll for hand sanding and surface preparation.
• What does PSA mean here? PSA means pressure-sensitive adhesive, so the abrasive is made to stick to a compatible flat backing or sanding block.
• What materials can it be used on? Listed applications include wood, primer, paint, body filler, plaster, composites, plastics, chipboard, solid surface materials, stainless steel, mild steel, and non-ferrous metals.
• Is 120 grit a finishing grit? 120 grit is generally a good general-purpose prep and smoothing grit, often used before moving to finer abrasives if a finer finish is needed.