NewkeepsR 16G G23 Titanium Internal Threaded Tragus Helix Earring With Prong Setting Flower CZ Labret Studs Bar size: 16ga inner length 8mm,6.5mm flower top Material: Titanium 6AL4VELI ASTM F-136 implant grade,Titanium has excellent biocompatibility and is half the weight of surgical steel Suitable for helix/conch/standard lobe piercing/tragus/lip labret 16g piercing. Internally Threaded Feature: the bar can slide smoothly through your piercing and won't cause irritation/No glue is used in the manufacturing process