Body Candy Stainless Steel Red Heart Nipple Clicker Set of 2 Created with Swarovski Crystals 5/8" Gauge size 14 gauge; 1.6 millimeters Circular barbell diameter 5/8 inch; 16 millimeters Nipple body jewelry created with Swarovski crystals 316L stainless steel nipple clicker set for nipple piercings Nipple ring sets feature easy open and close hinged barbell