✦ 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: 4mm 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 with a standard 4mm flatback. The AB (aurora borealis) coating creates iridescent flashes of pink, purple, blue, and green as light hits the stone. The 4mm flatback provides a stable, comfortable base. 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 Threadless push-in design — secure, easy to insert and remove Flat back sits flush for all-day comfort, even while sleeping Prefer a slimmer flatback? See our AB CZ Prong Stud (2.5mm 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.