These safety pin earrings are handcrafted from your choice of sterling silver or 14K gold filled wire. They measure around 3/4"(18mm) long and 1/4"(6mm)wide. They are the smallest safety pin earrings ever. It may take you a few seconds to put them on because they barely go through your piercings, but once they are in your ears, they stay put! They are very comfortable to sleep in. The end of the wire is filled to be smooth, so you can't use it as a real safety pin.