【Hypoallergenic Titanium Material】2PCS threadless replacement bars are made of from implant-grade G23 titanium, lightweight and biocompatible for sensitive skin, these flat back earring backs only are designed for all-day comfort. 【Many Size to Choose】Gauge: 18G(1.0mm), length: 6mm, diameter of back: 4mm 【Multi Piercing Jewelry Wear】Choose different size for your Nose / Helix / Cartilage / Tragus / Conch / Lobe / Lip Piercing Jewelry. The labret bar is hollow, allowing you to add a variety of attachments for lots of different looks. 【Tips】Please slightly bent the pin around 20 degree when insert the top jewelry 【After-Sales Service】If you have any questions please feel free to get in touch with us and we'll handle them immediately thus providing you with satisfactory services. Threadless Bar only