4 Pieces 00 Gauges Stainless Steel Crystal Clear Screw Fit Tunnel 10mm 2 Pairs of Tunnels size 10mm (00 Gauge) 316L Surgical Grade Stainless Steel Tunnels. 1 Pair of Tunnel Designed with a Sparkling Gemmed Rim. 1 Pair of Screw Fit Hollow Tunnel. 00 Gauge Double Flare Screw Fit Tunnels.