What is the name of this small component inside Shimano Tourney STI What is the name of the component outlined in red in the image, that seats the head of the brake cable? ![enter image description here](

This part is officially called "cable hook" and "cable hook unit" in Shimano docs. See attached image (I won't link it because the PDF is not hosted by Shimano) and this document (page 7).

![Tourney STI blow chart](