Like something pulled from a vintage jewelry box, the Bijoux Flat Back Stud in Pink is a petite cluster of pink stones. It's eclectic, timeless, and undeniably romantic. This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud. Measurements: 18 GA (1mm), though compatible with most 16 or 20 gauge threadless labret posts Post is 1/4 inch (6mm) in length, with a 4mm disc on back. Approx. size of the front design is 5.2x4.5mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering Materials: polished ASTM-F136 Titanium, gold is 18K PVD Gold Plated ASTM-F136 Titanium, Cubic Zirconia Care: 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.