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