38mm Stainless Steel Threaded Tunnel

"38mm Stainless Steel Threaded Tunnel 38mm tunnel. Stainless steel threaded tunnel. Threaded tunnels have a 5/16"" (8mm) wearable surface, which is the space between the flares. Specifications: 38mm (1 1/2""), 5/16"" (8mm) wearable surface,...