Black aurora CZ screw back tunnels! These tunnels are made from black pvd on 316L stainless steel and have a beautiful, black rainbow aurora cz gem that is iridescent and colorful and surrounded by an eyelet design. Screw back design. Available in sizes 2G (6mm)-7/16" (11mm). Wearable area is 7mm. Overall length is about 14mm. Sold in pairs (2 pcs). For healed lobes.