Cereal Kill drill add on?

[potaetoSON]

My buddy just got a cereal killer mill. we manually ran 12lb through it yesterday. it worked fine..

tried to put a drill on it but it slips....
it looks like it needs drill bit with a hole so you can tighten it to the roller shaft.

any ideas on this?

thanks

 

[TheCrimsonSquirrel]

Does it have a notch on it that a drill can catch on? Or is it just a round shaft?

My barley crusher has this and I don't even use the chuck to tighten it down.

 

[Rowdy]

Can you post a picture?