BodyJ4You Plugs Surgical Steel Double Flared Tunnel 0 Gauge - 14mm - 2 Pairs Square Inside 316L Surgical Steel Double Flare Tunnels. 9/16" Inch Clear Double Flare Tunnel Highest Quality, 316 L Surgical Stainless Steel. You will receive 1 pair of stainless steel plugs tunnels (2 pieces) of the size you select. 2 Pieces from 0 Gauge - 14mm - Choose your Size