If you cannot find them most any machine local machine shop with a lathe could make them....hell I'll even do you a CAD program to save you some coin if you want.
JPerry
+1y
I actually went to a local car show show about a year or two ago and bought a few chrome spikes, if you look in my profile you can see them on my front bumper and shit. IF I taped and re drilled them I could put them on my wiper screws. I have never seen spikes for sale anywhere else. But I know if you go to like a freak/Goth store you can some times find some sick ass spikes you'll just have to put up with everyone in the store looking at you like your the fuckin weirdo lol! good luck finding some man.