Rose Goldtone Finish Silver 4mm Ball Stud, Goldtone Finish Silver 5mm Ball Stud and Sterling Silver 6mm Ball Stud Earrings, Set of 3 All earrings have post with friction back, the 4mm ball stud is .16" in length and .16" in width, the 5mm ball stud is .20" in length and .20" in width and the 6mm ball stud is .23" in length and .23" in width Made in Thailand Imported