A flat disk made of implant-grade titanium (ASTM F136 6Al-4V ELI) and anodized yellow, giving it the look of gold at a fraction of the cost.
Size 14g/12g will work with either 14g (1.6mm) or 12g (2mm) internally threaded barbell shafts or posts.
These ends screw on, and work only with internally threaded barbells of the same gauge. Thread