A satisfying print-in-place fidget toy. Nested rings spin freely around each other straight off the print bed, with no assembly and no supports needed. It's a single-piece print of about 4.3 hours and 27 g of filament (Printables estimate), making it a great first print for beginners and a crowd-pleaser on any desk. If your rings fuse together, try the looser-tolerance version on the original page.