Just print it on a back side, no supports needed.
Fitted by glue, in my case Mamut glue from company Den Braven.
40 % infill, gyroid and 4 perimeters = strong enough
Mine is made of PLA.
Color change is already done in .gcode
Enjoy.
See my other Milwaukee tool hangers, for sale at: https://cults3d.com/en/users/jakubrigo/3d-models
The author marked this model as their own original creation.