Product Details 20 Gauge White Faux Opal Pronged Left Nose Screw The look of iridescent opals is so in right now, especially in the world of body modifications. This 20 gauge nostril screw puts the beauty of a white faux opal on display at the end of its 1/4" length post made from durable 316L surgical grade stainless steel. At the end of the screw post, a 2.5mm white faux opal stud ball is prong mounted. This simple yet elegant post screws into your piercing for a secure fit that's easy to insert and remove. Specifications 20 Gauge (.8mm), 1/4" (6mm), 316L Surgical Grade Stainless Steel Screw, 2.5mm Faux Opal, Left Nostril Design