So on my ride I think its a Hall-Craft part but not sure.
No I dont currently have a pic but its Billet stringer mount and you squeeze the bottom and pull into the handle (which pulls the lock position tabs from selected degree angle) shift it then release the handle and the tabs fall into desired spot.
Im sure its not the only one but hell if I can find another one I just wanna know what brand it is (and Im bored at work)
