Not your average drop earring. The Orb Flat Back Stud pairs a round, bezel-set stone with two offset stones below, creating a layered look with just the right amount of motion. This listing is for a single ASTM F136 implant grade titanium push-pin flat back stud. MEASUREMENTS: Post Gauge: 18G (1mm) also fits most 16-20G threadless labret posts Post Length: 1/4 inch (6mm), with a 4mm disc on back Front Design: approx. 5.7 x 14.8mm Please see listing photos to get a sense of the size of the stud on-ear. We also recommend that you check your own ear measurement before ordering. MATERIALS: ASTM-F136 Titanium 18K PVD Gold Plating 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.