It's always interesting to learn that the most expensive isn't always the best!I do enjoy his channel. He comes up with some interesting ways of testing things.
I need to get a drill sharpener one of these days. One tool I've never had but could always use.A great review channel. Also subscribed to him.
I have a Drill Doctor and a Tool room drill sharpener. The drill I need is never one that has just been sharpened.
David
Who sells?Just purchase a set of Viper bits and be done. They have a life time warranty.