Body Candy Stainless Steel Sun and Moon Glow in The Dark Tragus Cartilage Earring 16 Gauge 1/4" Gauge 16 gauge; 1.2 millimeters 1/4 inch; 6 millimeter barbell 316L stainless steel barbell with 4 millimeter ball end Cartilage earring can be used for tragus and multiple piercings Tragus earring that glows in the dark; for a day to evening look