316L Stainless Steel Nipple Jewelry Multiple Spiral Design On The Shield Partially Plated In Black For An Antique Jewelry Look Two Rings In The Back Of Shield For A Barbell To Be Attached Ring Size (Wearable Size) : 1/2" | 12.5Mm Bar Thickness : 14Ga | 1.6Mm Bar Length : 3/4" | 19Mm Ball Size : 5Mm Material : 316L Stainless Steel