Forbidden Body Jewelry 16g Septum Rings Set of 2: 16 Gauge 10mm Gold IP Plated Surgical Steel Spike & Ball Horseshoe Forbidden Body Jewelry septum rings Made with 316L Surgical Steel & IP plating Includes two rings: One double spike horseshoe ring & one double ball horseshoe ring Both rings are 16 gauge and 10 mm (3/8 inch) in diameter 3 mm balls, 3 mm cones (spikes)