Mini freewheel / overrunning clutch on stepper motor

I am looking for a mini freewheel, one that I could mount on a standard NEMA 17 stepper motor (or similar stepper).

I want to use it with a pulley, such that it starts the motion of a wheel, which can then continue to rotate on its own.

Does anybody have an idea where I could get such a freewheel? Most of what I have seen is either for bikes or cars - I just need a very small version.

Any tips are appreciated!

Try Stock Drive Components.