These ultra-slim infinity hoops are the ultimate basic. Solid 14k Yellow Gold Hoop Thickness: 1.0mm | Hoop Inner Diameter 5mm, 7mm, 9mm, 0r 11mm Curated Ears, Infinity Hoop, Ear Piercings Tragus, Multiple Ear Piercings, Animal Totem, Gold Stud Earrings, Animal Totems, Solid Gold Jewelry, Gold Stud