Bioflex Labret Monroe Nose Stud Retainer Screw Triple CZ Curved Ring 20G 18G
Choosing a Labret Stud Style. Once all the way through the piercing, the smaller insert piece can be either pushed or screwed in, depending on what type of labret stud you have. 18G - 1.0mm. 20G - 0.8mm (Thinnest).