Track numbers

My friend has some numbers he had made, and they feel about the same honestly. They're pretty light weight, and I've never had one come off. I like them because they are cheap and if they get ruined/ I lose one, who cares. Plus in leaves more room in the pocket for go fast parts

I buy the numbers off eBay where there should be sellers catering to your competition's regs. Then I buy a roll of magnetic sheet, stick them on and cut them out. If you buy the magnetic sheet thick enough it won't fly off. Never has for me.

I used magnetic numbers from Firestomgraphix with black painter's tape on the edges. I don't trust the magnets to stick by themselves since the corners have a tendency to raise a little.