I used this with a matching FatMax chisel to enlarge a hole in a concrete wall. My alternatives were to spend a few hundred dollars to hire someone to do it with a diamond crown, or buy my own crown, use it once and find a place to store it. Using this manual method, it took me about an hour to break down what I needed. Give it a try: I've been working on a ladder and hitting from above, so I'd probably be better off with a lighter version of this hammer.