2 Pieces Diamond Cup Grinder 4 Inch Concrete Turbo Diamond Grinding Cup Wheel 12 Segs Heavy Duty Angle Grinder Wheels for Angle Grinder

The grinding disks worked great and did a good job on concrete. I bought three thinking I would wear them out fast because they didn't cost that much but only needed one. The one I used can still be used again. They fit well and are very durable.

Great value, front concrete steps needed ground flat and smooth they did the job.

The cup needs to be deeper. I used one in an inexpensive Harbor Freight 4 inch grinder. The cup is barely exposed over the guard and either have to remove the guard or install a new disk as it wears down. It is not good for deep grinding jobs and works very well as a finishing disk providing smoother finish than other cups I've used. Slow work for anything more than polishing.

I heard that some of these wear down quickly and that is not my experience. I used this to grind off excess cement that was stucco applied to a wall. It worked great!

Skeptical about the quality for the price. I was surprised.Ordered these to grind trip hazards on 3500psi concrete poured in 3'x6' sections for a long walkway.Steady grinding for about 50 mins and there is still about 30% left on a wheel (approximately 1/4" thickness reduction of a concrete slab the width of the wheel and 20 feet in length would be a good estimate of what 70% of the wheel is capable of grinding off)Finish is typical of a course/medium grinding wheel, the concrete is smoother than a broom finish but not slick or polished.Balance is good for the first 60%, then the wheels have a tendency to vibrate (not excessive, just more).The project called for about a 1" to 0" reduction in thickness at a 60 degree angle slope, about 14" wide. A 3' wide section took about 30 mins using this product with a hand grinder.If Labor Cost isn't an issue, cheaper than rental + consumable costs for a machine grinder (small floor waxer style).

Had to use them to grind down the edge of some cement brick I used to build a bbq. They don’t plow through material like the video shows unless it is a soft stone. Even after grinding the whole edge of 8 stones the disk was just minimally worn down and would easily be able to do many more. Considering you get three of them for waaaaay less than a name brand at a big fox store, I would say this is a pretty good deal

I haven't used it yet. And to be honest, I'm kinda scared to considering how cheap it was.

If you have a Crack in your concrete these are the best to smooth it out b4 you fill it. Sometimes concrete will Crack due to setting then one side is higher this will smooth it out then fill it. It works quickly and yes it will produce a good deal of dust

Todo muy bien y formal

Se ve bien el productoEl no venir empaquetado adecuadamente con el sello del fabricante me causa un poco de desconfianza