Gary Sanders are you talking about the Scotty 254 Rod Holder Extension?
Yes, I believe that there is a set screw on each end holding it together. You can also use that Scotty rod holder extension design and modify other rod holders like Ram as well. I will be looking into sawing some Folbe rod holder extensions in half to create some for myself sometime before summer. My bird trees are just too big and heavy For my Ranger with how I have my tracks mounted.