If you're looking for some fun with your friends, and something that may take a little while for them to notice, these is just for you.
They're shaped like little wieners and balls, and yes they glow in the dark so everyone will see them when your prank victim is driving and parked at night.
Screw onto any standard Schrader style valve stem (which are the most common valve stem in car tires as well as most off-road vehicles).
It'll be hilarious every time you see the person pull up in their car and they still haven't noticed that they're on their tires.
Work great on cars, trucks, RVs, trailers, bicycles, mopeds, scooters, and more.