Item Type: Body Jewelry Fine or Fashion: Fashion Metal Type: Stainless Steel Material: Acrylic Style: TRENDY Shape\pattern: Bar Customized: Yes Body Jewelry Type: Labret Bar: 1.2mm*10mm Gauge: 16G Ball: 4mm Occasion: Casual NOTE: Darker colors require longer light exposure to glow brighter. P/S* This is a luminous piercing. Place under the sun for a few minutes or illuminate it with the flashlight of your mobile phone or any flashlight for a few minutes. Next, put it in the dark and it will glow.