Backpack Clip Print in Place

Update: I made a new design, and love it even more:
 https://www.printables.com/de/model/929626-crane-hook-carabiner

This is an adapted version of my USB key clip with improved sturdiness and a flatter appearance to better fit onto a backpack.

As a clip, due to the open design, the spring tension is distributed over the whole part and breaking like in other designs is no issue anymore

See the pictures and STL's for more details.

There are sizes from 15mm to 55mm available.

The design was made in Freecad and I made it parametrizable.

There is a table in Freecad where you may adjust the length (Groesse), the width (Breite) and the thickness (Dicke).

Currently, it is designed that the width and the thickness is adjusted automatically depending on the length. But you may override that of course.

The model can be printed without support. Best printed in ABS or PETG, as PLA may be a bit too brittle for the task.

Let me know if you have any comments, proposals to improve the design or just want a special size and not want to fiddle around with Freecad.