Could not find this as a spare part for my Hozelock auto hose reel, so I designed my own based on the original one. To fit the size of my printer the model is slightly shrunk compared to the original part.
I have not used it for a long time, so I cannot give any promise regarding durability. But in initial tests it was quite sturdy and showed no problems. It was printed in PETG as this is said to withstand UV light.
FreeCAD file is included.
The author marked this model as their own original creation.