Tarnish Resistant 304 Stainless Steel Stud Earrings, Hypoallergenic Earrings, Infinity, Stainless Steel ColorSize: about 3.5mm wide, 9mm long, 1mm thick, 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.