We're all about the loving chemistry of a chain reaction with this curved flat back stud. It's perfect for a helix or, depending on your anatomy, a mid-helix, or a conch piercing!This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud.Measurements: 18 GA (1mm)Post is 1/4 inch (6mm) in length, with a 3mm disc on back. Approx. size of front piece is 11.4x4mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before orderingMaterials: 18K PVD Gold Plated Titanium, Titanium, zirconiaCare: Water and tarnish proof with proper care. If exposed to salt water, chlorine, or lotions/perfumes, rinse off with cool-warm water and gently dry. When not wearing, store in a dry, cool place. Do not pull, twist, or tug on your jewelry.