These classic hoop earrings feature a sleek flat front design with a hinged open and closure. Hoops are adorned with 18k gold plating and a high polish finish, earring posts are stainless steel. Outer diameter measures 15 mm. Metal Type: Brass Plating: 18k Gold Closure: Hinged Outer Diameter: 15 mm Earring Thickness: 3 mm Earring Posts: Stainless Steel