【G23 Titanium Material】: 2PCS threadless replacement bars are made of G23 Solid Titanium which is the most basic and one of the safest metal used in body jewelry. 【Many Size to Choose】: gauge = 20g(0.8mm)/18g(1.0mm)16g(1.2mm), length = 5/6/7/8/9/10/12mm, diameter of back = 4mm 【Multi-Part Wear】: Choose different size for your Nose / Helix / Cartilage / Tragus / Conch / Lobe / Lip Piercing Jewelry. Same Jewelry with Different Bars in Multiple Parts. 【Tips】: Please slightly bent the pin around 20 degree when insert the top jewelry.attention：No Top End/Gemstone inside 【Application】Any threadless top in the market can be used in any of the threadless labrets