Those carbide cutters are intended to be turned by hand, but they also work by using a cordless drill motor on them. I drilled and tapped the mandrels on my set for a short piece of all thread rod and clamped the drill chuck onto it. It's easier to get a smooth cut by running the drill motor at a slow, constant speed.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!