I really don't know what this is, but it's kind of fun. The kids seem to enjoy it.
For some reason I could not upload the assembly file, so you have to load each ring.
This is version 2. I have made it easier to assemble and disassemble such that you can mix the colors of the rings. These new rings are not compatible with version 1 rings.
You can print all rings together as one color, or print the rings individually.
I finally included the stand that it is sitting on in the pictures. The outer ring of the spinner should snap into the slots in the top of the stand.
To disassemble the rings start with the outside ring. rotate it 90degs from the next ring. Then squeeze the ring slightly to make it oval shape and it will come off. Continue the process to the inner ring. The inner ring is the most difficult, but it is possible.