Relentless , unstoppable, accurate "This thing is unstoppable. I’ve been using coils for 35 years. I was skeptical of the way it holds the needle bar in place. Don’t push down on it- or it’ll chew through the bottom of your tube. So accurate it’s uncanny- and I don’t think anything will slow it down. It needs less power than the ones I’ve been using. Well done." — Raven (5/5)