This hexagon rethreading die is a must-have tool for any industrial and scientific enthusiast who requires flawless results .According to my experience, this product was exactly what I needed TO save me from a costly repair job. The die was super easy to use and came with a precision that rivalled my high-end cutting tools. The only downside was that it didn`t stay in place as well as I would have liked. But overall, I would highly recommend this to anyone looking for quality at a great price..