Worked on the floating dock yesterday with Cousin James. Dock is ready for boat arrival in the next 2 weeks. I have one galvinized one piece pole that holds the floating dock away from the pilings. My first qustion is what is this piece of me metal called and where can 2 used? I want to add 2 to the dock. The dock is about 55 feet long and it has 2 now. I would be interested in used ones if anyone has any leads. Thanks to all.