5 Pieces Set of UV Fancy Marble Ball with 16 Gauge 316L Surgical Steel Twister Barbell Body Jewelry Materials : 316L Surgical Steel with UV Ball Twis Barbell Thickness : 16 Gauge ( 1.2MM ) Twister Length : Available from 8mm to 12mm Ball Size : 3MM Quantity : 5 Piecess Mix Color / Free Shipping