Hook-on bed rails work by fastening into a specially designed clip that is attached to the headboard and footboard of your bed. These bed rails hook to the headboard and footboard, creating the frame of the bed.
The other popular type of bed rail is the bolt-on bed rail, which attaches the rails to the beds using a bolt. You can identify what kind of bed frame you have by looking at the ends of the rails. Hook-on bed rails have two sturdy-looking metal hooks at the end of each rail.
Hook-on bed rails can be made out of metal or wood. Both types have metal hooks on the ends, but the wooden ones can be designed to match the headboard and footboard to add aesthetic attractiveness.