The Bellybutton Piercing “Double Infinity with Chains” from the Steel Basicline® has a fixed and a removable ball. Both balls are equipped with clear Zirconia crystals. The slightly curved bar is externally threaded. The complete piece of jewelry consists of high-quality 316L surgical steel. The jewelry has a bar thickness of 1.6 mm. All the threads in our jewelry collections are standardized, so you can combine the rings, balls, rods and attachments with each other (same thickness)! Like all basics of the Steel Basicline®, the article can be sterilized in an autoclave and because of the skin-friendliness of the material, it is also completely safe for allergy sufferers.