As the name implies, Akiyuki's 'Five Rings' are made up of five ring-shaped Lego. The individual ring looks like this. Connect the first stage and the ball supply mechanism that serves as the base.

Kawaguchi Akiyuki! Remember that name, my friends, for this man obsessed with Lego has built what’s probably the greatest Lego ball machine (or like the initiated call them, Great Ball Contraption) ...