Tiny prong set cz internal threaded flat back. Can be use onto your cartilage and helix. Material 316L Surgical Steel. Cubic Zirconia. Quantity & Measurement One piece of CZ Threaded Labret Gauge: 18G (1.0mm) Post: 8mm CZ size: 2mm Silver: 316L Surgical Steel Gold: Gold PVD Coated 316L Surgical Steel Rose Gold: Rose Gold PVD Coated 316L Surgical Steel *Earrings for layering purposes only. Sold separately.