Ritastephens 14k Solid Gold Eyebrow Nipple Circular Barbell HorseShoe Body Jewelry 14g 14k Solid Gold Eyebrow Nipple Circular Barbell HorseShoe Body Jewelry 14Gauge Beautifully crafted and well designed. Hypoallergenic and nickel free. Size: 12mm in diameter, about 1/2", 13mm long, (14 Gauge) Thickness: 1.2mm It has one 14k gold 4mm screw on ball at one end for comfort and security when worn Pictures are enlarged to show details