Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 29 Flap Discs for Sanding, Stock and Rust Removal, Finishing, Grinding, Deburring (Case) - 120 Grit

I've had the opportunity to use these flap discs, and I must say, they've left me thoroughly impressed. In terms of performance, they stand shoulder to shoulder with some of the more well-known brands I've used in the past. What truly sets them apart is their exceptional longevity, which is a key factor for me as it directly impacts their value.I've found that these flap discs hold up remarkably well over time, even under demanding work conditions. They don't wear out quickly, ensuring that I can complete tasks efficiently without the hassle of frequent replacements. This extended lifespan not only saves time but also makes them a cost-effective choice in the long run.Another standout feature is the price point. The value for money offered by these flap discs is truly exceptional. You're getting top-notch performance and durability without breaking the bank, which is a win-win situation for anyone who relies on these tools regularly.

I recently ripped out carpet from a very old tongue and groove floor — a floor that had two decades-old layers of paint. The paint was not peeling, the tongue and groove installation was not level, and for various reasons a floor sander was not a viable option.After trying 40 grit paper with both a belt sander and a random orbital, I resorted to these flap discs on an angle grinder. The difference was stark. I am getting much better results from the discs (it's not even close) and working much faster (again, it's not even close).There are however a few caveats.First, sanding wood with these is MESSY. While the sanders have a modicum of dust collection, the angle grinder does not, and these discs spit up a LOT of sawdust. At least twenty times messier than using a sander is my estimate.Second, compared to an orbital sander or even a belt sander, sanding a large surface with an angle grinder is really hard work and requires a fair amount of hand and wrist strength.Third, an angle grinder, even with a sanding disc as opposed to a cutting wheel, is a much more dangerous tool than a sander, and sanding is really only a viable option if you remove the safety guard. So you have to use good sense and have decent skills if you want to undertake this. You'll also want to protect your eyes.Fourth, sanding your floor this way can gouge it up pretty bad very quickly, especially if you're trying to remove paint from deeper pockets, which requires more angle. If you don't want a distressed look, or if you're unwilling to spend the time to sand out gouges, this is probably the wrong tool for you.But in my case, these drawbacks were well outweighed by the benefits. I am looking to dye the floor, not paint it, and I really wanted to get the paint off, including near the edges of the grooves and other spots where my belt sander and random orbital sander really struggled to get to bare wood (and only with a lot of time investment). And given the circumstances with this floor, which is patched and was not cleanly installed to begin with, I'm perfectly happy with a little bit of a distressed look.One more advantage: if you have nails or screws you can't get out or further in (or that you just plain missed), they will rip your sandpaper to shreds. With these discs, you can easily just grind them down. (Be aware though that grinding creates a lot of sparks.)How are the discs holding up? I had about 400 square feet to sand, and I estimate I'm close to 3/4 done. I probably could have swapped more frequently; nor have I attempted any method to clean out the discs of gunk (other than banging the disc on the floor a couple times), and I just put the third disc on prior to quitting for the day. If these discs were $8 or $10 each, I'd probably be dissatisfied with that, but given the price of this pack, I'm really happy with that sort of cost–longevity ratio. In my opinion, these are giving really good value.As I indicated, not everyone will want to use these on their floors. But in the right circumstances, this is a great option.

Durable and Long lasting

I do use a lot of these type of sanding disc and have used many brands. These discs are good and thick with 5 layers. Many discs on Amazon or Harbor Freight are very thin with just 2 or 3 layers of abrasive sheets stacked together. Pay close attention to the number of layers looking at disc wheels from the side. From a vertical line count the layers. The more layers there are, the longer they will perform better as they wear down through the disc. The cheapie ones have 3 and the higher quality ones have 5 or more layers. Also compare the cloth thickness of the layers. For many discs on the market the price is all over the place. Ranging from $3.50 to $8.00 each and most are the cheaper thin ones. Don't be fooled by the price. The big home improvement stores rip you off for these discs and they are usually thinner. These discs are balanced fairly good, and the price is good. The only reason I gave them 4 stars is, it seems that they might vibrate some when they are used aggressively. I use them mostly for pre-cleaning mill scale on steel before welding. I know most of you old hands know how hard mill scale is to remove. (But for newbies, for scale removal where some scratches are not important, start out with a 36 grit wheel). These also work well on rust, grinding down welds and just about anything else. Always wear good eye protection, a proper fitting respirator, and hearing protection when using grinders. I wished I would have taken better care of my ears when I was younger. How many of you older guys agree with me on that? Also don't let others around you breath this dust. Any way I will update again after I have used the rest of these in a few weeks. So far they are recommended. Sorry, I don't want to sound like a know it all, but I have used many of these and I wanted to pass on the info. Thank you for reading.Update:5/3/17I just received my second order of 10 discs. The first ones worked pretty good for the price so I reordered them. Good discs.

Best bang for your buck and hold up remarkably well with constant use

I bought these disks due to a YouTube channel I watch, and I couldn’t agree more that these disks rock! I’ve used them to sharpen lawn mower blades, to get rid of paint from wood, and rust from sea cans

co mparado con austromex o diablo se desgasta mas rapido, pero por el precio es una muy buena compra.resistente y de calidad buena, es una buena alternativa a las marcas mas comunes y caras. lo recomiendo

GoodBangFor the buck about half asGood as walter flap disc but lessThen half the price

They are fantastic will buy again.