Each Barbell is 16G with Gem Balls that are Connected by a 3.25" Chain and includes a Skull w/ Gems Charm (1/2" tall). Each Barbell is 16G and 6mm in Length. Can be used in Multiple Piercings including Cartilage, Tragus, Rook, Flat, Helix, Industrial, Daith, Conch and Lobes.