WOO HOO!! ANSWER!! 16 gauge cartilage piercing?

If you got it done with a gun at the mall, it is probably 20g-18g. If you got it done by a professional body piercer, it might be 16g, but some piercers will do the cartilage with 18g or 20g. If the barbell doesn't fit into your piercing, you can go to a professional body piercer and they will stretch your piercing with a tool called a taper.