Really, really tiny. Might go through all the way.
If your ear piercing is even a little bit stretched from wearing heavy earrings or a larger gauge, these might go all the way through. Mine are close, if I pushed, they'd go. I'm not going to test it. I ordered six, and one of them is already a greenish black color on the post ( where it was in contact with skin). This is after wearing them for one week. They do look nice, they're simple and match anything, but I'm not sure I'd buy them again.
Rating: 3 stars