My entry into the bead contest. Fun little flair to add if you're a car enthusiast or a mechanic or even if you just think it looks cool. 

The ringlands are .25mm thick, so print with the smallest layer height you can for the best result. No supports needed, just flip it over and let it do its thing.

A small amount of resizing might be needed because i didn't have a string near me to measure, so I used another bead as reference.