Fly away with this modern version of wings. This belly button ring will be a great conversation piece. This is an adorable belly button ring with a 316L high grade surgical steel shaft and a .925 sterling silver butterfly design in your choice of blue, red, green,purple,light blue or yellow. The externally threaded top ball size is 5mm. This navel ring measures 14 gauge and 10mm- 3/8 of an inch. Entire piece is nickel free.