Product Details Hypoallergenic jewelry for sensitive skin3mm 4mm 5mm Aurora Gem Ball 316L Stainless Steel Stud Earrings 3 Pack Simple meets stylish with these 20 gauge stud earrings! They're made with 316L surgical grade stainless steel straight posts. They feature elegantly simple ball ends in three sizes, each set with an aurora gem to make as much of an impact as you could want! They even have butterfly-style friction backs for a secure fit. You can have simple style at every size with these classic ball earrings! Sold as a set of three.Specifications20 Gauge (.8mm), 316L Surgical Grade Stainless Steel Straight Posts, 3mm-5mm Ends, Sold as a set of 3