I have bought this and the less powerful drill hammer, and used them on a pool demo job with rebar reinforced hard 5k+ concrete. I used the smaller one first, very effective in knocking the last inch of the wall. I thought I'd try this to see what it could do. Its clearly more powerful, and about the same weight. With this one you must set up on your point with the motor off. It you try to set on a point with the motor on, it is powerful enough to bounce you off, you have to let it stop. The smaller one you can leave on. Niether are effective alone on hard reinforced concrete, but are good auxiliary tools. I think this one would be best on up to 3" of