This is a version of the famous Gear Bearing by emmett - Thingiverse. I reduced the number of gears to 4 which lets you see the gears better. I also made it a bit smaller for a faster print.
This is a great torture test for the MMU, since each color is used on each layer. You can also print this in one color if you don't have a MMU.
The author remixed this model.