Titanium Threadless with Bezel Set CZ Triangular Shape Top. Manufactured from High Polish Implant Grade Titanium (Ti-6AL-4V-ELI ASTM F136). To secure the inside bar or base, add a slight bend to the pin by simply inserting the pin halfway and pushing the top to one side. Gem size: 4*4mm. Pin Size: 0.45mm x 4.7mm.