The Mirka BASECUT 6" Grip P40 Sanding Disc, model 20-622-040, is a 6 inch paper sanding disc built for aggressive stock removal and surface prep. This is a hook and loop sanding disc designed for coarse sanding, stripping, and leveling work. If you need a disc that gets into paint removal, body filler, plaster, or rough wood prep without paying premium-abrasive money for every step, this is the kind of disc that makes sense.

What matters here is the combination of an economical paper backing, a high initial cut, and a coarse P40 grit. In plain terms, this disc is meant to remove material quickly. That makes it useful when the job starts rough and cleanup speed matters more than final finish quality. It is a practical choice for early-stage sanding on paint, lacquer, filler, chipboard, plastics, hardwood, soft or resinous wood, veneer, solid surface, and glass fiber.

Mirka positions the Basecut line as a high-efficiency option for sanding with paper, and that shows up in the way this disc is meant to be used. You are not buying this for delicate finish sanding. You are buying it for the dirty part of the job: stripping old coatings, flattening filler, breaking edges, and getting surfaces ready for the next grit. The long working life matters because coarse prep work is where cheap discs usually quit early or stop cutting cleanly.

The 6 inch grip format is a big part of the value. Fast disc changes help when you are stepping through material removal or swapping worn discs during repetitive prep work. On a random orbit sander or similar 6 inch grip-compatible platform, that means less downtime and less messing around when the pace of the job picks up.

This Mirka sanding disc also covers a wide range of shop and jobsite materials. The listed material compatibility includes paint stripping and removal, plaster and filler, synthetic materials, chipboard, solid surface, veneer, plastics, paint sanding, body filler, hardwood, soft or resinous wood, and lacquers. That broad range makes it a smart stock item for shops that bounce between wood, coatings, composite materials, and repair work.

Who should buy it? Pros and serious DIY users who need a coarse 6 inch sanding disc for prep work, not finish work. It fits well in automotive repair, woodworking, remodeling, paint prep, and general surface correction. If your goal is fast removal and efficient sanding in the early stages of the job, the Mirka BASECUT 6" Grip P40 Sanding Disc is right in its lane.

Mirka BASECUT 6" Grip P40 Sanding Disc for Fast, No-Nonsense Prep

The Mirka BASECUT 6" Grip P40 Sanding Disc is the kind of abrasive you reach for when the job starts ugly and you need to move material now.

• Who it's for: Guys doing paint stripping, filler work, rough wood prep, automotive repair, and general sanding where a coarse cut is the right call.
• Why it stands out: It gives you the aggressive bite of a P40 disc in a 6 inch grip format with solid efficiency and a long working life.
• Worth knowing: This is a coarse prep disc, not a finish disc. It is best used as the first step in the sanding sequence, then followed with finer grits.

• What kind of sanding is this disc made for? It is made for coarse sanding and material removal, including paint stripping, filler shaping, and rough surface prep.
• What grit is this version? This specific version is P40, which is a coarse grit for aggressive cutting.
• What materials can it be used on? Mirka lists paint, plaster, filler, body filler, plastics, chipboard, solid surface, veneer, hardwood, soft or resinous wood, lacquers, and glass fiber.
• How many discs come in a box? This pack includes 50 discs.