These villains cut their hair like a dream. Good dream.!.!.!. It's truly day and night compared to a standard drill/bits. The pressure required to drill should be halved, if not more. The holes are cut more perfectly and feel smooth. The friction is almost zero, so don't worry. Essentially, I'm saying that if you're undecided, get off that fence by all means. I promise you won't be disappointed. rather pleased.