Size-18 Gague Labret Jewelry, Post Length: 1/4'',5/18'' and 3/8''. Star shape Top End Size: 3mm. Threadless labret stud keep your jewelry secure and stay in place. Held by tension, threadless jewelry cannot accidentally fall out when properly worn. Using Tips - If the jewelry top feels loose, then you just need to remove the pin and slightly bent the pin more than 20 degree when insert the pin. Using: This different bar length titanium stud can be used as labret lip rings, monroe piercing, tragus/Helix/Cartilage Earrings. Titanium threadless earrings - These are made from G23 titanium, a comfortable and skin-friendly flat back labret and earrings for you. Using: This different bar length titanium stud can be used as labret lip rings, monroe piercing, tragus/Helix/Cartilage Earrings.