Bio Flex Surface Piercing Barbell   Product Info. Bio Flex Surface Piercing Barbell. Autoclavable, Nickel Free, & Allergy free Barbell. Adjustable To Desired Length with Self Threading with Twist of Ball. Basic Info. A piece of jewelry that can be worn or pierced on the body to show a form of body modification on the skin   These are used to conceal your piercing. They are also used as a temporary piece of jewelry if you need to get an X-Ray, or MRI. It does NOT entirely hide the piercing, but it makes it far less noticeable. Thickness 14GA Length 3/4'' Ball Size 5mm ALL ITEMS ARE BRAND NEW! ALL SALES ARE FINAL DUE TO SANITARY REASONS!