Carabiner Mod_1

Remix of https://www.thingiverse.com/thing:2101885
I liked the concept, it seems more durable than the other models.
But the door open size is too small, and the hook catches my clothes every time when I remove it.
I enlarged door opening and hook profile, for easy removal the carabiner from something.
Added a chamfer for easier door mouting.
Now it works better.