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

Used to grind down concrete pavement, works great

These do the job but I have no idea how long they will last. One thing I noted immediately was any paint they come in contact with will clog the cutting surface and must be scrapped off to continue.

I had to make some spacers to get them on a very old makita side grinder and remove the safety guard but they worked great. Safety shield and heavy gloves an absolute must!

Work so well I am ordering more

Sent it back wobble , unbalanced

The embedded diamonds are spars and straite the concrete as you grind it. If youre just rough grinding, and dont need them to last very long, these work well enough.

Longevidad!

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.

Good purchase!

Did a good job sanding my concrete countertops.