Ion Plating(IP) 304 Stainless Steel Hoop Earrings, Hypoallergenic Earrings, Ring Shape, Real 18K Gold PlatedSize: about 34~35mm in diameter, 2mm thick(12 Gauge), pin: 1x0.7mm.Hypoallergenic Earrings: Made of Stainless Steel, our earrings are nickel free, which are gentle to skin. These earrings are ideal for sensitive ears.