304 Stainless Steel Stud Earrings, Hypoallergenic Earrings, with Ear Nuts, Mixed ColorSize: about 11.5mm in diameter; pin: 0.8mm; 6pairs/card.Hypoallergenic Earrings: Made of Stainless Steel, our earrings are nickel free, which are gentle to skin. These earrings are ideal for sensitive ears.