I liked the mount I found on thingiverse , however, it wouldn't work with my US-model hose reel I bought from here. It just needed some minor modification to get it to work with my reel.
I enlarged hole diameter to 25.2 mm to fit the US model aluminum posts on the hose reel, and also removed the diagonal piece inside the hole that would prevent the post from going through the hole properly.
I included and tweaked the modifier objects included in the original 3MF here with the following suggested print settings:
I thought this might be useful for someone else, so I post it here.
The author remixed this model.
Enlarged hole diameter to 25.2 mm to fit the US model aluminum posts on the hose reel, and also removed the diagonal piece inside the hole that would prevent the post from seating properly.