Star Internally Threaded Labret Stud. 16g. 1.2mm . 316L Surgical Steel Internally Threaded Gem Labret Stud. Available in 6mm - 10mm lengths. Supplied with one screw-fit internally threaded star gem 3mm ball. Suitable for use in piercings such as the Labret , Lip Piercing, Monroe Piercing, Snakebites Piercing and Ear Piercings such as the Tragus, Helix and Auricle, Forward Helix, Forward Pinna, Triple, and flat special. For help with sizing please read our Sizing Guide below. High quality labret stud.