Asymmetric S-hook

This is an asymmetric S-hook (S-shaped hook).

I designed this for my washroom's iron bar (diameter: 4.07 mm) as a hair tie holder.
To fit your environment, maybe you should rescale this.

Dimensions:
- Inner diameter of the small hook: 4.27 mm
- Inner diameter of the large hook: 14 mm

You can check the detail on my blog post (in Japanese).
https://arundolon.hatenablog.com/entry/2021/11/12/003544