Surgical steel industrial piercing accented with .925 sterling silver. This 32mm barbell works for multiple piercings. For the helix piercing simply insert each end of the barbell into each hole to wear. Remember, do not pull through the hole. 14 Gauge (1.6mm), 1.25" (32mm), 316L Surgical Grade Stainless Steel Barbell, 5mm Balls, .925 Sterling Silver. Surgical Steel Sterling Yellow Rose Industrial Barbell Earring