This is a UM logo (University of Miami) dangler navel ring. NCAA college football logo belly rings are the perfect accessory for showing off your sexy navel with your team logo. Made with a 316L surgical steel shaft. The externally threaded top ball size is 5mm and bottom ball is 8mm. This belly ring is 14 gauge and the length is 10mm-3/8 of an inch. Entire piece is nickel free.