Daul Post Cleet Mount Rod Holder for boats or fishing Docks. This mounts onto a cleet that tie a rope on . Easy to mount or remove when not useing it. Made from 3/4" inch thick alum. You can take it from one boat to another. Installs just a few minutes. Has a bolt with a rubber bumper that can adjust so it well  fit all boat cleets. The rubber bumper is thick so that protects the finish on your boat.