304 Stainless Steel Ear Studs, Hypoallergenic Earrings, Snowflake, GoldenSize: about 4.5mm wide, 5mm 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.