Key gold stud cartilage earring, tragus or helix piercing. 316L surgical steel barbell piercing is 16 gauge with a 1/4" long post with a screw on ball backing. Choose your color wire wrapping, shown with blue. Please choose your color from the drop down box. All orders arrive in a gift box. The key charm is made of rhodium gold plated surgical steel. To maintain the finish, make sure it is rinsed off completely of any soap, lotions, creams or hair products.