Hi cutie

,
Yes, our
#34-533 sterling silver French hook ear wire is made of .925 silver wire. (All our sterling silver items are .925 or higher. The technical
definition of Sterling Silver is .925 silver.)
Most earring findings (both ear wires and posts) for sale in the US are 20g to 23g. You can bend them on purpose, but they don't normally bend when being worn or in the jewelry box. (Drop them in your pocket or the bottom of your purse ... and that's another story... that will break most earrings as I have woefully learned from personal experience.)