Black half ball spiral barbell, 14 ga,Diameter:1/2" (13mm) Home » Black Line | Ear Piercing | Eyebrow piercing | Spiral Barbells Gauge (Thickness): 14 (1.6mm)Diameter: 1/2" (13mm)Type: spiral barbellMaterial: titanium coated 316L surgical stainless steel5mm half ballShown: 12mm spiral barbell. Retail Price: $15.59Your Price: $ Quantity: