Silver Titanium G23 12mm Circular Barbell 14g 4mm Balls Horseshoe Eyebrows Earring Ring Grade 23 (G23) Titanium: A body-friendly material because its an elemental metal  it doesnt contain nickel. Titanium is a perfect choice for people with hypersensitivity. Simple design, perfect for any kind of body piercing. (Septum piercing, Labret Stud, Tongue, Lip, Tragus, Cartilage, Earrings, Eyebrow, Nipple) 4mm Round Balls Size: 12mm FREE standard shipping US.