Why not put a button in your belly button. The Navel Button Hybrid Curved Barbell is a Sterling Silver button attached to a Curved Barbell made from our standard 316LVM Surgical Steel. The Navel Button is permanently attached to the Curved Barbell so you wont lose it. This piece gives you the option to have a Surgical Steel Gem Ball too. This is an Internally Threaded Curved Barbell as are most of our pieces.