4 Pieces 0 Gauges Stainless Steel Crystal Clear Screw Fit Tunnel 8mm 2 Pairs of Tunnels size 8mm (0 Gauge) 316L Surgical Grade Stainless Steel Tunnels. 1 Pair of Tunnel Designed with a Sparkling Gemmed Rim. 1 Pair of Screw Fit Hollow Tunnel. 0 Gauge Double Flare Screw Fit Tunnels.