The threadless prong-set princess mystic topaz 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. These are a limited edition, only available while supplies last. These are available in the 2mm size only.
You'll receive the end only. NeoMetal barbells are sold separately. These might not be compatible with threadless parts from a different maker.