Tarnish Resistant 304 Stainless Steel Stud Earrings, Hypoallergenic Earrings, Round, Stainless Steel ColorSize: about 14mm long, 3mm diameter, pin: 0.8mm.Hypoallergenic Earrings: Made of Stainless Steel, our earrings are nickel free, which are gentle to skin. These earrings are ideal for sensitive ears.