This is a hot barbell tongue ring made with a 316L high grade surgical steel shaft with clear jeweled replacement beads available in 5mm or 6mm. Also available in 14 gauge and 12 gauge. NOTE: 12 gauge only available in 15mm - 5/8 inch. The 14 gauge is available in your choice of 14 gauge and 12mm-1/2 of an inch, 15mm-5/8, or 18mm-3/4 of an inch. Entire piece is nickel free.