UnCommon Artistry Sterling Silver Large Fancy Earring Backs (Earnuts) (2) Large Fancy Butterfly Clutches or Ear Nuts ( earring backs) Genuine .925 Sterling Silver * Measurements: 9mm Diameter, 4mm deep. Will accommodate a 20 gauge (.032mm) standard earring post. *Quantity: You get 2 Earnuts for 1 pair of earrings