These replacement earrings back features a fine sterling silver polished finish tarnish-free and nickel-free available in silver-tone or yellow gold or rose gold flashed. The earring backs size is 5x4x3mm. This butterfly earring back size fits for most standard earrings posts and easy to put on and off, ensures comfortable and secure wear. This is a must-have to add to your favorite post earrings whether studs or drops. This set is economical for replacing the missing backing or have a few as back up. Butterfly earring backs are the best choice of DIY earring lovers. It is excellent for earring back replacement, earring making posts, earring backs, earring making supplies, earring repairing, earring making, and earring replacement backs.