Benchmark Abrasives 4.5" x 7/8" Zirconia Type 29 Flap Discs, 80 Grit

These are great quality and last as long as the most expensive ones on the market! Highly recommend!

For the money it worked well.The life of the wheel is good. I would buy it again.

These are way better quality than I expected for the price I will buy again. Heavy duty and better quality than I was getting at other local stores for 3x the price.

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:5/3/17 I just received my second order of 10 discs. The first ones worked pretty good for the price so I reordered them. Good discs.

I use this primarily to sharpen lawnmower blades and it does this very well and fast. I also use them to sand down random things like sharp metal edges after I use a cutoff wheel on something.

Seems to last

Compared to most on the market, These last pretty well for the quantity and price. I have bought many different ones on Amazon and now these are the only ones we buy. purchase about 10 a month for work.

Heavy duty, use them all the time.

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