Pliers could be used by putting them inside the broken section and turning, yes you are right the pliers probably wouldn’t open up wide enough to go around the outside.
:wink: :smile:
Looks like someone screwed the shower head onto the shower hose with grips, as a rule shower heads should be screwed to the hose by hand.
The person you are helping needs to hold the hose (as in the photo) and turn the broken part (marked with yellow arrow) with adjustable grips, pliers may...