Tiny Trinity Ball Flat Back Stud Earring is the perfect for cartilage, helix, upperlobe piercings.| Lead and Nickel Free. SOLD AS A SINGLE EARRING, buy two for a pair. Gold Vermeil (Thick layer of Gold plated over Sterling Silver) Trinity Ball 3.5mm Post Length 6mm, Thickness 1.2mm(16ga) Front threaded flat back closure #J063-6G