KSEIBI 644030 Diamond Concrete Grinding Wheel 4 1/2 inch for Polishing and Cleaning Stone Concrete Surface, Cement, Marble, Rock, Granite, and Thinset Removing, Angle Grinder Wheels Cup

Bought this to smoothen out rough surface on my first precast concrete project. This sands the surface like butter. I’m impressed by what is can do. Based on how little it has worn so far, I feel like this is going to last a while.

Started grinding down some flagstone and immediately turned my yard into a post-apocalyptic dust bowl. I was basically sandblasting myself. Ordered a shroud and finished the job like a civilized human being—way better results and way less “why is there grit in my teeth?” moments.The tool itself crushed it (the flagstone, not my will to live). Just do yourself a favor and use a shroud with a shop vac unless you want to look like you lost a fight with a bag of flour.And for the love of lungs, wear your PPE. Grinding without it is like going into a sandstorm with your eyes open and saying, “This is fine.”

Great tool. I needed to grind some masonry and I tried a straight grinder but took forever. This blade ripped through it fast so use caution as you can easily remove too much.

So far so good. It overheated my battery operated 20 amp DeWalt so I had to use one with a cord to use it

I'm using this wheel for lapidary purposes, so probably different than most other people. I use it on the angle grinder to shape larger rocks and it certainly does the trick. As far as fitting on the angel grinder - note this is not a threaded cup wheel - you'll need the nut that comes with your angle grinder to tighten it on. The quality is fantastic. Works great with my 4.5 inch Bauer that I bought from Harbor Freight. As with many tools like this, let the wheel do the work - you don't need to apply a ton of pressure. I'm really happy with it.

Cut quality:Works great for removing mortar on tile

The title says it all

We used this cutter to remove leftover thinset after hammering the bulk of the thinset off. While it was capable of the job, it removed thinset for about 6 sq ft before the wheel just polished the concrete. Because of the shallow cup to the wheel, I had to add shims to my universal dust shroud I added to my grinder.