A-10 Pack of 14g 4mm Steel Replacement Balls for Piercing Barbells Body Jewelry-External Thread This 5/32 inch (4mm) end ball is a medium size, perfect for cartilage earrings, eyebrow ring and those who want a smaller ball at the top of their belly button ring The 16 gauge replacement balls will fit most 16 gauge or 18 gauge externally threaded barbells and the 14 gauge will fit 12 gauge or 10 gauge barbells with 14 gauge threads. Piercing Jewelry-Body Jewellery Bars and Hoops for Women, Men and Teens See our entire collection of replacement parts for body jewelry Packs of Externally Threaded Replacement Ends for Body Piercing Barbells. EACH STYLE HAS A DIFFERENT AMOUNT IN THE PACK. PLEASE READ CAREFULLY BEFORE ORDERING. Choose From Packs of Replacement End Balls or Spikes in Plain Steel or Black Steel. These replacement end balls will fit most body piercing jewelry including labret studs, industrial barbells, straight barbells, spiral barbells, circular barbells or curved barbells, however, we can only guarantee that these end balls will fit barbells purchased from BodySparkle.