I just received these today. My blue and white caps are looking pretty tattered so for 10 bucks on Amazon I thought, "Why not?". I'm not sure if you can read it but the description itself is almost worth the 10 bucks on it's own.
In case you can't make it out in the photo this is what is written on the card in the package, complete with original punctuation:
TIRE VALVES
DECORATE YOUR WHEEL
this is the fancy valve decorated cap with four electrons. which is made by metal material. which can instead of the original bad valve cap of the tyre, also show the beauty characteristic of the tyre.
DANGER:
To Avoid Danger Of Suffocation Keep Away From Babies And Children.