What Is Name For Clasp Anyone Know What The Name Is For This Cylindrical Metal Earring The Clasps Around The Upper Ear Is Called?

Anyone know what the name is for this cylindrical metal earring the clasps around the upper ear is called? - what is name for clasp

Here, the slope of which I speak.
http://i47.photobucket.com/albums/f159/ThornofBlood/Earringthing.png

I've seen people with one before, so I know that in real world exist.
You have the right name? Because I really need a. )