STUDEX ear studs are the best-selling ear piercing studs worldwide. This fact reinforces our determination to produce our ear studs with the highest possible precision and quality. Ear piercing studs are available in many styles. Studex Sterilized Surgical Steel Piercing 3MM Earrings/Studs in 12 Pair April Birth Month Set, 24K Yellow Gold Plated. 12 Pair 3MM Glass Foil Back Stones in a dozen pair April birth month set. Each stone is set in sterilized surgical steel 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.