Body Candy Stainless Steel Blue Synthetic Opal Medallion Helix Earring Industrial Barbell 14 Gauge 37mm Gauge size 14 gauge; 1.6 millimeters 1.45 inches; 37 millimeter barbell length 316L stainless steel straight barbell for an industrial piercing To wear as helix piercing simply insert each end of the barbell into each hole Helix barbell with circular charm and blue synthetic opal accent