I just bought a boat that has the forestay connected with this threaded piece. I've never seen one like this before, and while I have 2 forestays with the boat I want to know what it is so that I can buy some spares. Or at least know where to find them if I need them. When I google threaded forestay or shroud terminal all i get is turnbuckles. Any idea what it's called so I know what to search for?