Lose a hub cap? Now you can replace it in a nicer color than the ugly white.

I suggest printing in ASA or PETG, simply because other filaments will not survive in the sun and heat (like if you leave your stroller in the car).

Printing at an angle will allow you to minimize supports, but will make it a little brittle, so careful not to break it when you insert it.

The fit is 90% - good enough to stay on, but not exactly like the original. I've provided blender files so you can improve it if you'd like.