◉ This is an item from my family. Please note that responses to questions may be delayed. ◉ This is a US Cup joint. I purchased it used last summer, but the urethane rubber broke as soon as I set it up. I replaced the urethane rubber afterwards, but I ended up not using it. Currently, it doesn't break even when I attach it to a board and bend the extension, so it's probably usable, but it's an old item, so I can't guarantee it. I will wrap it in bubble wrap and send it.