Fidget Keychain Spinner V2

Version 2 of my fidget keychain spinner build for 4.5mm BB balls. Originally started as a bearing, but added the extension for attaching keys to it (Version 1). Revised it further by moving the keychain part to the bearing cover, so you can now spin the bearing itself, or run it over the table.
- Also added a bonus two-part Rim & Tyre part, so you can print the Tyre part separate with TPU.
- Made for 4.5mm balls (about 14 is perfect). You can resize the model for other sizes i guess?
- Insert the balls at the small notch on the body (the last few might snap in).
- Would recommend setting Z-seam to random for a smoother bearing race.
- Could still leave out the cover and use it as a normal spinner or bearing i guess?
- Don't add lubrication!