I'd like to start by saying that I like the strength of these rails. They look and feel premium, but my only issue is that only one side has a locking mechanism. This leads me to suspect that it will wobble a bit when closed. It should be noted that the rail that attaches to the drawer is not removable from the rails, or at least that's what I couldn't understand, and there aren't any. all instructions that come with these bars. However, there are holes in the appropriate places that allow access to drill holes and screws, but this creates additional effort during assembly.