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Great info!
I've been looking at replacing the whole slabs or grinding down the edge of a couple of sidewalk sections that have heaved up. I wasn't sure how I was going to grind them down. Having the slabs replaced is going to cost $300. If this 4" cup wheel will work on my Ridgid 4" angle grinder that would save mucho $$$. I assume this cup wheel is made for the angle grinder I have. I didn't know that cup wheel existed.
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