This clip is used to attach a cloth wheel cover (constructed with an 1/8" fiberglass rod loop) to a spoke of a bicycle wheel. It was designed to clip on to 12mm spoke nipples. It should also work with other size nipples.
This clip must endure some stress so it should be printed with PETG or nylon filament. I doubt that PLA will be strong enough.
This has not been thoroughly tested so please comment if there are any suggestions or issues with the fit or functional dimensions.
Designed on Fusion 360