Body Candy Stainless Steel Blue Synthetic Opal Clear Left Cartilage Earring 16 Gauge 1/4" Gauge size 16 gauge; 1.2 millimeters 1/4 inch; 6 millimeter barbell length 316L stainless steel straight barbell for cartilage piercings Barbell earring features blue synthetic opals and clear accents Left ear cartilage earring specially designed for left ear piercing