This is an illuminating labret monroe lip jewelry made with a 316L high grade surgical steel shaft with Glow-In-The-Dark half-bead design available in clear, yellow, or flesh tone. The comfortable flat end measures 4mm. The size is available in your choice of 14 gauge and length of 8mm-5/16, 10mm-3/8, or 12mm-1/2 of an inch. The entire piece is nickel free.