I needed handrails on 2 outdoor stair cases, old, concrete and slate, with uneven risers. My contractor recommended I try these. The price of four 5-step handrails plus the labor for installation was significantly less than a custom ironworks solution. These are sturdy and check the box for our homeowners insurance. Read other reviews about recommended installation tools. Our contractor spent 3-4 hours setting the first 2 handrails in slate. He used a hammer drill. The next 2 go into concrete so he says that will be easier.