Material: G23 Titanium, Our titanium passed SGS test, can meet ASTM F136 standard,100% Hypoallergenic, suitable for sensitive skin.More lightweight, comfortable, and modern. Lighter than Surgical Steel, help to healing new piercing faster. Gauge Size: 16G/1.2mm, Length bars: come with 6mm and 8mm bars.As use for Titanium Push-in Labret Studs, Make You More Charming. Wearing: Threadless is very easy to take on and take off without help.Push Back closure. We hope every single one of our customers to love our jewelry as much as possible. Please contact us if you have any questions, we will solve the problem for you within 24 hours. We hope every single one of our customers to love our jewelry as much as possible. Please contact us if you have any questions, we will solve the problem for you within 24 hours. Push Back closure Material: G23 Titanium, Our titanium passed SGS test, can meet ASTM F136 standard,100% Hypoallergenic, suitable for sensitive skin. Gauge Size: 16G/1.2mm, Length bars: come with 6mm and 8mm bars. Using: As use for Titanium Push-in Labret Studs, Make You More Charming. Comfortable: More lightweight, comfortable, and modern. Lighter than Surgical Steel, help to healing new piercing faster. Wearing: Threadless is very easy to take on and take off without help.