Not as promised/a letdown
Contrary to what I was told, these backings do not work well on 16-gauge posts. While they do attach, they are too tight and extremely problematic; I had the worst time removing them.  As for 20-gauge posts (the standard size of most stud earrings), the backings are crooked once in place. In addition, they are small and difficult to handle, especially if you have long nails. My fingernails are short, and it was monumentally challenging to put them on/take them off.<br />Purchase at your own risk. Not recommended.
Rating: 2 stars