Male inserts its center bit ito the female, sorry for being somewhat crude, just double checked US sellers and they have the same terminology and topology

Copals and Compurs and all major flash synch shutters except a few Kodak UK lenses (Europe)and many early US flash syns (inc Eastman Kodak) have a female flash socket so need a male part on the lead.

More importantly these leads are the normal extremely ones not something strange and rare, and if needed theres adaptors for multiple flash synch which will adapt.

Ian