My first attempt, I believe I was over thinking things. This one is only the spindle ends. I designed them to fit some spare fidget spinner bearings in. The bearings fit over the threaded rod that came with my Anet A8. I only need to print 2 of these. I'm printing 2 as I type this as a test. Once done I will update with photos.
I've added a refined version as well as one without the need of bearings. I know some don't have them. I'm using the newer version now. They work just as they should. Nice a simple.