I wanted a steering wheel for my arkanoid spinner on my mame machine. So I used this steering wheel, added a hub in tinkercad and away I went. The hub fits a spinner 39.7mm in diameter. I used a 30% infil to give it a bit more rigidity as well. The steering wheel is roughly 135mm in dia. After my first print failed I broke it into two pieces--it also saves 3 hrs of printing since the supports are much smaller..