Caucasian Belt Multi-Tools?

[cyten]

Originally Posted by Turkoman.khan

Of course, from iron are utilitarian. They performed the function of a screwdriver, as I wrote in response to the first post.

I understand that the part that is circled in red is used as a screwdriver, but I'm wondering about the part that is circled in yellow? And what is the proper name for these pieces in Russian or Caucasian languages?