KONGMING 25 Pcs 225mm Sanding Discs Grit 40 (9 inch) Hook and Loop for Drywall Sander

The essentials

These KONGMING sanding discs come as a pack of 25, sized for 9 inch / 225 mm sanding heads and intended for hook-and-loop (Velcro-style) sanding systems. If you do regular drywall work, skim coats, or surface prep with a long-neck sander (and similar tools), having spare discs on hand can save you from interruptions when one goes blunt.

On paper, the big draw here is straightforward: 25 discs at grit 40, all matching in size, with hook-and-loop backing so they should be quick to fit and remove. That makes them most useful for sanding tasks where speed of change matters—rather than slow, careful hand finishing.

What you get and how it helps

You’re getting 25 hook-and-loop sanding discs in the same diameter (225 mm). They’re specified as grit 40, so they’re positioned toward faster material removal and rougher surface profiling than very fine finishing.

A practical way to think about them: you’d typically use grit 40 when you need to cut through filler/skim areas, smooth out uneven patches, or prep for coatings where the first stage of sanding is doing the heavy lifting. Then, depending on your workflow, you’d normally move to finer grits afterwards—because grit 40 alone can leave a coarser scratch pattern that isn’t always what you want under paint.

Where they seem to shine

A few elements from the product description stand out for everyday value.

First, the discs are described as made with abrasive aluminium oxide (alumina) and a special heat treatment. The claim is improved polishing, sharpness, and wear resistance, plus being durable and anti-static. In use, that usually translates to discs that hold up better through repetitive jobs, and a bit less mess sticking to the abrasive compared with very basic sanding materials.

Second, the hook-and-loop design is described as easy and quick to apply, and intended not to fall off during use. If you’ve ever been mid-sanding and a corner lifts, you’ll know that this sort of fit reliability matters more than people admit.

Things to watch before you buy

This set is only listed in grit 40, so if your project needs fine finishing right away, you may find it too aggressive. It may also be overkill if you’re only touching up small areas by hand or you’re after a smoother “paint-ready” final pass.

Also, the description points to compatibility with drywall sanders (including long-neck models), but it doesn’t spell out any specific brands or exact backing systems. It’s worth double-checking that your sander head uses hook-and-loop and matches the 225 mm / 9 inch disc size.

Best use cases (and a quick example)

These discs are aimed at sanding and surface prep across multiple materials: joint compound/filler, primer, filler again, paint-related prep, and even materials like metal, wood, thermosetting plastic, plastic, and artificial stone.

A concrete example: imagine you’ve applied a skim coat to a section of drywall but it’s a bit uneven. You fit a grit 40 disc to your long-neck sanding head, then do a first pass to knock down high spots and even the surface. Once it looks flatter and more consistent, you can switch to a finer grit for that smoother, paint-friendly finish.

Mini FAQ

Will these discs work with any sander?

The product is described as hook-and-loop and sized for 225 mm / 9 inch heads. Beyond that, the safe approach is to confirm your sander uses hook-and-loop and that the backing pad size matches, since no specific brand compatibility is given.

Is grit 40 suitable for finishing?

Grit 40 is typically more about cutting and profiling than ultra-fine finishing. For many drywall and paint prep jobs, you’ll likely want to follow up with finer discs for the final smoothing.

How quickly can you change discs?

The listing states the hook-and-loop style is easy and quick to attach and remove, and that it should stay secure during sanding.

Are these discs good for drywall sanding specifically?

Yes, the description directly mentions use for drywall sanding and polishing, including long-neck sanders and tools used for plasterboard work.

Final verdict

Should you buy it?

It makes sense if you want a straightforward pack of 25 hook-and-loop sanding discs at 225 mm / 9 inch, with grit 40 aimed at the rougher stage of sanding drywall filler, primers and prep work. If you do frequent surface preparation, having a stack of identical discs can be practical.

You may want to skip it if you only need very fine finishing, because the set appears limited to grit 40. It might not be a great match either if your sander isn’t hook-and-loop or doesn’t use the 225 mm / 9 inch backing size.