Mine is a loose hook with a male threaded end but the thread is smaller than the female thread on the back end of the rods. My guess is that is meant to have a barrel with 2 fem threads, one smaller for the hook and one larger for the male rod end but that this is missing.
Sadly one rod end also hasn't been threaded so just working out whether to thread it myself or take it back for replacement (or make do with
9m). Sadder still, my nearest store is out of stock so I had to go to the next one to get it, and go back to replace it :-/