The window handles are better than one might expect by the reviews

What I had not thought through the available reviews:
- The handles can be tilted to and locked (specific installation position is not to be considered)
- The handles have a button which is unlocked by the key (handle can be moved). The button can be pressed without a key, so that the handle is locked.

Handles take on very valuable, with the white paint you have to cope.
I can only recommend the handles as a child safety in upper floors.