Door knob puller

Edit 22 May 2018:
Edited the lion head, increased thickness and corrected the puller ring orientation, see pictures below.

Edit 21 May 2018:
More added.

Edit 18 May 2018:
Added a lion head.
https://www.tinkercad.com/things/2UCxvhdtshz

Edit 6 May 2018:
Added more to the collection.

This is a collection of knobs that can be useful when you get one broken. A 3mm hole is just a marker for the center point.
More will be added later.

Tinker it here:
https://www.tinkercad.com/things/bKe7ZCKkXVv