Art and Molly 14k Yellow Gold Earring Back Replacement Secure and Comfortable with Ear Locking Tension Grip Tight Nut (Medium) Pair of 14 karat yellow gold heavy friction earring backs (2 piece set) Medium size measures approximately 7mm round by 3mm thick Easy To Grab Design, Beautiful Daisy Earring Backs, Ear nuts Great replacement for lost earring backs, Fits on most standard posts Comfortable to wear on the ear and comfortable grip design