Organic Maple Wood Double Flare Tunnels 0G-20mm (2 Pieces) Double Flared Wood Tunnel. Handmade Organic Blonde Maple Wood Tunnels. Check our other Listings for Deals on Taper Kit, Plugs Kits, Plugs, Tapers and Plugs. You will receive 1 Pair of Maple Wood Tunnels (2 pieces) of the size you select. 2 Pieces from 0 Gauge - 20mm - Choose your Size