Set Pink Baby Bear Bio Flex Flexible Pregnancy Maternity Navel Ring Belly Pack 14GA (1.6mm) 1"(25mm) BAR - Made of Bio Flex Material. BALLS - 316L Surgical Steel Each set has 4 belly bars, just pick blue or pink The Bio Flex bar material can be cut to the perfect length and re-threaded again by screwing the ball back on. Rest easy as this is an Amazon fulfilled item.