Surgical Steel 4mm Ear Piercing Earrings Studs 12 Pair Mixed Colors White Metal By Jbt Stone: Synthetic Gemstones Mixed Colored Birth stones Color with White Surgical Steel Metal Earring Dimension: &lt;Medium Size 4.0 mm All earrings exceed all F.D.A / E.C requirements. Earrings are sealed and sterilized in individual packages. Comes with Butterfly Earrings backs, are grooved friction post for secure fastening. Ear piercing studs are not returnable if packaging has been altered. Sold per Dozen (You get 1 pair of each Month)