Medusa Plugs / Gauges. 2g / 6.5mm, 0g / 8mm, 00g / 10mm, 1/2&quot; / 12.5mm, 9/16&quot; / 14mm, 5/8&quot; /16mm, 3/4&quot; /19mm, 7/8&quot; /22mm, 1&quot; /25mm