So, Geoff has a lathe (wood turning machine) and he made this rattle. I love the stuff he does on this machine. He uses wood carving tools and the machine turns the wood for him. this rattle is made out of one piece of wood and the rings get formed with him and his carving tools. Then he finishes them with tung oil, so babies can chew on them, and they make such a beautiful, quiet sound. LOVE it!!