Erduoduo 2 Pack 4 Inch Diamond Cup Grinding Wheel 12 Segs Heavy Duty Angle Grinder Wheels for Angle Grinder

To fix an area of concrete floor.

Esto se gasta en 2 horas

Might take a few of these to do what you want to do as they seem to wear faster than I thought they would, but they do work well while they last.. One wore out in about 15 mins of smoothing old concrete edges

Perfect

Doesnt fit. free return drop off only!. So now I have to spend money in gas to return....

The description says 2. Why show 4?

Good value. Works as intended with a predictable life.

What I like about this 4” grinder disc is, it fits perfect on the 4 1/2 grinder. I used the disc to clean up old grout and tile adhesive. Cleans up excellent. I live in Puerto Rico and got it in a week.

I had to remove about 3/4 of concrete bonded to an older concrete foundation. The newer concrete added over the older concrete foundation was securely bonded. I could not chip it off. Grinding was the only method for removal. I had about 4 sqft of 3/4 material to remove. I ended up using both grinding wheels and each still has some amount of usefulness left. I kept them just in case I needed to remove anymore material. I was very impressed with how they performed.

I only received one grinding disc total. I did not get what I payed for.