Pentagonal Tunnels Sterling SilverFlesh tunnels for stretched lobes with an asymmetrical pentagonal decorating a wide front flare cast in sterling silver 925. The wearable length is 9 mm and the back flare adds 0. 5 mm to the total diameter of the tunnel. Tunnels range in size from 6 gauge (4 mm) up to 1 and a half inch (38 mm). Tunnels are sold in pairs. Bold geometric shaped pattern looks great on its own or with earrings or hanging weights of any size or shape through it. The