Idk What to call it but it's awesome!!!!!! the ball in the middle was cut away from.... everything was one single piece of soft wood 🪵 at one time and someone cut away at it until the ball was left trapped by the pillars!!!! I'm a nerd, I know!!! Offers and Bundles are FTW and I am happy to help so please feel free to ask !!! 🙏💖🐈‍⬛🤙🤓🤗😃😊💗🥰