✦ Sold as One Single ✦ Bend pin slightly before inserting for a secure fit (see photo for instruction). [SPECS] Material: Implant-Grade Titanium (ASTM F-136) Color: Silver (plain titanium) Stone: Aurora Borealis (AB) Cubic Zirconia (CZ) — Prong Set CZ Size: 2mm, 3mm, 4mm Gauge: 16G (1.2mm), 18G (1mm), 20G (0.8mm) Bar Length: 6mm, 8mm Flatback Width: 2.5mm Style: Threadless push-in Gauge Guide: 16G — helix, tragus, conch, daith, septum, cartilage 18G — earlobe, cartilage, nostril 20G — earlobe, nostril Rainbow color-shifting sparkle in a classic prong setting. The AB (aurora borealis) coating creates iridescent flashes of pink, purple, blue, and green as light hits the stone. The slim 2.5mm flatback keeps the back profile extra low. Implant-grade titanium is biocompatible and safe for sensitive skin. Why you'll love it: Implant-grade titanium (ASTM F-136) — biocompatible and hypoallergenic Prong setting maximizes light reflection for brilliant sparkle Slim 2.5mm flatback — ultra-low profile for tight piercings Threadless push-in design — secure, easy to insert and remove Want a larger flatback? See our AB CZ Prong Stud (4mm flatback). More CZ colors: Clear | Emerald | Aqua | Blue | Red Just need the top? See our CZ Prong Top (CZ colors). Prefer a bezel setting? See our AB CZ Bezel Threadless Stud.