7/16" = 11mm Steel Clear Solid CZ Screw-on / fit Plugs Prongs Setting Ear Retainers 1 Pair Solid Clear Cubic Zirconia Crystal Nickle Free Surgical Steel Grade 316L Size 7/16" (inch) or 11mm (milimeters) Stainless Steel Silver Color with Prongs Setting Screw-on / Fit Back