- Internally Threaded Paw Cluster Tragus Labret - Internally Threaded- Implant Grade 23 Titanium (ASTM F-136 Ti 6Al-4V-Eli)- Nickel Free. Best for initial piercing- Size: 16 Gauge (1.2mm)- Length: 5/16" (8mm) - Top CZ size: 4mm/2mm 2mm 2mm