Really good at cutting stainless steel and aluminum wax on the aluminum and hard to reach spotsBurns up like the cheaper ones it's okWe use these daily in our business. Upon receipt the package was marked qty of 25 on the bottom and quantity of 10 on the top. It was clearly a package of 10. We paid for and ordered a package of 25. They will have to be returned and we will have to wait for another shipment, which will slow up work in our shop. I'll still give a 5 star rating because the product is great!I'll never buy the cheap ones again. This will take a tremendous amount of abuse.Used one of these for 2 weeks every single day. I weld full time and use cut discs constantly. Normal cut discs last 1-2 days at a dollar each. I abused a single walter combo zip disc for 2 weeks and it still has some life left. I am blown away and will absolutely buy them again.We have used all brands of cut-off wheels in our fab shop. Walter is BY FAR the BEST, longest lasting product. We cut all sorts of metal, sheet metal to 1/4" thick plate. You can't beat Walter for longevity; it's by far the best $$ value that exist today in a cut-off wheel.These disc are long lasting cut off wheels especially if you use them correctly. I used all sorts of cutting wheels by working at fabrication shops and ship yards. These disc are #1 best cutting disc!After seeing some very scary injury pictures of cheap discs failures, I wanted to make sure I bought higher quality units than the super cheap Chinese ones on the market. These units definitely fit the bill. They are very tough and seem to last a lot longer than the other ones out there.