Titanium Threadless Arc Spike Cluster Top. Manufactured from High Polish Implant Grade Titanium (Ti-6AL-4V-ELI ASTM F136). Pin Size: 0.45mm x 4.7mm. The Arc Spike Cluster Top delivers bold symmetry in a refined, low-profile design. Five prong-set CZ gemstones curve gracefully across a polished titanium arc, accented with subtle spikes that add texture and dimension without overpowering the piece. Where to Wear:Perfect for helix, conch, and flat piercings — a contemporary accent that adds edge and brilliance to any curated collection. The Lot # & "JPN" will appear on our label of the bag of jewelry which indicates that it is sourced and milled from titanium directly made in Japan, a DFARS compliant country for titanium. We have corresponding mill certificates for these styles which can be located on our website once logged in. The certificate includes the heat # & lot # for traceability.