U Shape (For Septum, Nipple, Etc), 10 Ga Home » 316L Stainless Steel | Nipple Rings & Shields | Nipple piercing | Retainers Material: 316L surgical grade stainless steel Length: 1/2" (13mm)Gauge (Thickness): 10 (2.5mm)Inside diameter: 3/8" (10mm)Type: retainer Retail Price: $4.31Your Price: $ Quantity: