Flat door key knob

This is a flat version of my previous Door key knob(https://www.thingiverse.com/thing:4962522). The main difference is that the handler is flat. Dimensions are identical.

The key knob is a useful tool to convert any key into a door handle. Do you have in your house any door where you permantently leave a key put the lock from the inside? Do you feel it could be more easy to turn that key? Do you have small kids that have trouble turning that key? If so, that key knob is the perfect solution.