Dust plugs for backing plates

Richie said
Not the adjuster plug the little round one the size of a dime...Probably why I'm having such a hard time trying to find one

I got 3 sets of backing plates right in front of me.
The only hole l see about that size is where the.emergency / park brake cable goes through.

Any other hole is something someone has drilled in there.

MAYBE / POSSIBLY ..a pic of said hole would help ????