The “Tear” belly button stud from the Steel Basicline® collection has one fixed and one unscrewable ball. Both balls are decorated with clear cubic zirconia crystals. The slightly curved bar is externally threaded. 
The complete piece of jewellery is made of high quality 316L surgical steel. The jewellery has a bar thickness of 1.6 mm. By the way, all threads in our jewellery collections are standardised so that you can combine the rings, beads, rods and attachments in the right thickness!  
Like all the basics of the Steel Basicline®, the article can be sterilised in an autoclave and is absolutely safe for allergy sufferers because the material is kind to the skin.