BodyJ4You Septum Clicker Ring Stainless Steel Macabre Skulls 16G (1.2mm) Brushed Linked Skulls Surgical Steel Septum Clicker Ring. Bar Length: 6.2mm Inside: W:9.7mm, H:7.6mm Whole: W:20.1mm, H:15mm 16 Gauge (1.6mm), 3/8" (10mm), Surgical Stainless Steel Septum Septum clicker has a hinge that opens and clicks closed.