The threadless bezel-set two gem cabochon cluster end is made from high polish implant grade titanium (ASTM F136 6AI-4V ELI) by NeoMetal Body Jewelry. It has a 25g pin that is compatible with most threadless jewelry brands. The smaller gem is available in the clear CZ color only. The larger cabochon is available in 23 colors. Choose your size and cabochon below. NEO-XCCAB18-2S-3height: 5.6mm, width: 3.3mm, depth: 1.6mm3mm Opal / 2mm CZ NEO-XCCAB18-2S-4height: 6.5mm, width: 4.3mm, depth: 2.0mm4mm Cabochon / 2mm CZ You'll receive the end only. NeoMetal barbells are sold separately. These might not be compatible with threadless parts from a different maker.