I have two standard piercings in my left ear. After using the same earrings for a while, I decided to buy two earrings off of ebay. They haven't arrived yet, but I read that one is 5mm, and the other is 16mm. I don't know a lot about piercings past what I already have done, so I just want to know what I'm going to have to do to make sure I can use these.
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