Very sturdy Doorhook

I wanted a nice study doorhook for my towels in the bathroom, so I made this in about 10 min in Fusion 360.
All my inner doors are 15 mm thick, so it fits that. If someone need it to be thicker or thinner, just ask in the comments and I upload one for you.
For Printing:
just Print it laying on one side, no support.

update 2022: I added a rounded version, we all need more smoothness in our lifes