Propeller replacement helper tool

This is a tool that helps to grab the motor while replacing a prop.
It was built to work with the Cobra 2204 2300Kv, but may apply to other 2204 Cobra motors, provided they have the same upper shape of the bell.

The idea came from this part, but was made from scratch to fit the Cobra motor:
http://www.thingiverse.com/thing:964313