[Hypoallergenic Material] This 16G Black Bat Cartilage Earring Stud is made of the G25 Solid Titanium Material, Hypoallergenic, Friendly to your Sensitive Skin. [Gauge Size] 16G = 1.2MM; Barbell Length: 8MM; [Internally Threaded] This Titanium Cartilage Earring Adopted the Internally Threaded Design, More Stable, Not Easy to fall off, Easy to Wear on and Take off. [Value Pack] Every Package Included 1 Piece 16G Bat Cartilage Earring, A great choice as a gift for your friend, your family or yourself. [COCHARM Service] Just Feel Free to contact us if you meet any problems, we will provide the 24 Hours After-sales Service for you. COCHARM G23 Solid Titanium Cartilage Earrings Stud 16G Black Helix Earrings for Women Flat Back Helix Tragus Piercing Jewelry Surgical Steel Hypoallergenic