Square Spike Captive Ring Home » 316L Stainless Steel | Captive Bead Rings | Ear piercing | Nipple piercing Type: captive bead ringGauge (Thickness): 14 (1.6mm)Material: 316L surgical grade stainless steel Shown: 14mm captive ring with 6mm spike. Retail Price: $9.71Your Price: $ Diameter/ball size: 3/8" (10mm) with 5/32" (4mm) ball(s)only this diameter/ball size is availableQuantity: