Tarnish Resistant 304 Stainless Steel Stud Earrings, Hypoallergenic Earrings, with Ear Nuts/Earring Back, Footprint, Stainless Steel ColorSize: about 8mm wide, 7.5mm long, pin: 0.7mm.Hypoallergenic Earrings: Made of Stainless Steel, our earrings are nickel free, which are gentle to skin. These earrings are ideal for sensitive ears.