Mills Machine announces a new, improved shouldered connection on its wildly popular NW6R drag bit heads at no charge. The NW6R drag bit is replaceable/interchangeable. It consists of a durable alloy connector and drag bit head. The alloy connector ensures longevity while the drag bit head is typically disposed of after it wears out and replaced with another head. Many sizes and shapes of drag bit heads are available and can be changed on site.