5Pcs 4.5" x 7/8" Nylon Fiber Flap Disc Polishing Grinding Wheel,Scouring pad Buffing Wheel for Angle Grinder, Polishing Tools (Grit 320)

Great for exterior door hinge rust removal

I use them with drill attachments too wet sand, the first time it worked excellent, the second time I think the tiny sandpaper squares stopped having the same effect. I think you need to add more pressure if you’re going to reuse them. Otherwise, I was very happy the first time, the second time not so much.. but I will tweak the amount of pressure I use.They seem to be lasting very well with the drill, however, I’ve only used it twice for a good amount of area with corners and curves, etc.

These polishing pdas/discs are wonderful. I use them for polishing 316 stainless steel, and also for clearing rust and filth from cast iron machine surfaces. I have read some negative reviews about the durability of these abrasives. Certainly, everyone’s experiences and angle grinder techniques are different, however, I have found the biggest factor in increasing the durability and longevity of these discs is lowering run speed. This important tip will be lost on you if you cannot vary the speed of your angle grinder. Single-speed angle grinders simply run too fast (10,000 RPM+-?) this loads the abrasive surface prematurely, but most importantly, also destroys the abrasive disc if an abrupt corner or even a somewhat dull edge is encountered. A high run speed will tear the abrasive pad apart instantly if catching an edge.. Simply lower the grinder speed to about 3000 RPM and you will love the results. This is a great labor saving product.

I have been using these to polish and remove debris on some old concrete, and my initial thoughts were that they looked distinctly Chinese and dangerous. After using a full pack though, they are my preferred wheels for this purpose. They last long, I'll get a good 30 minutes of continuous use out of them, and they are cheap. There's also really nothing quite like them on the shelves of the box stores, with alternating sandpaper and 3m-like abrasive pad. They are incredibly good at removing surface contamination and are far more gentle than a normal flap disc and far faster than a wire wheel.They also don't clog like a flap disc, and don't sling needles like a wire wheel l.All in all, I'm impressed. I'll be buying tons more.

good value for the money

works good for sanding

I used them to clean off burnt food on top of stove works well

I was hesitant ordering these because some folks said they didn’t last. Now, I’m not sure what they expected from 320 grit but they aren’t supposed to be hogging off rough material...you work your way up to these after sanding with coarser grits, first. Anyway, one disc was sufficient for me to finish-sand an oak bench 5 ft long x 2 ft wide with 10” tall ends plus the sides of a 5” thick slab, all of it twice, and the disc is still usable. It leaves a silky smooth finish that’s a pleasure to touch. The only issue I had is if you leave it in one place too long it’ll begin to burn the wood, but that’s an operator-error thing. It’s also true of all sanding discs when used on wood, so keep the thing moving and don’t bear down on it....let the rotation do the work.Very happy! Will definitely buy again when I need more.