Surgical steel industrial piercing accented with .925 sterling silver. This 35mm 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 1/4" (32mm), .925 Sterling Silver, 316L Surgical Grade Stainless Steel Barbell, 5mm Balls, Item Sold Individually. Surgical Steel Sterling Pink CZ Trilogy Industrial Barbell Earring