K&M Powerstroke Expand Mandrel Holder

The K&M Powerstroke Expand Mandrel Holder is designed to hold the Powerstroke Expand Mandrel (Sold Separately). This allows you to size your case properly with the K&M Powerstroke Expand Mandrel for Expand Iron Assembly before neck turning. Virgin/competition Brass isn't quite ready to Neck Turn when you buy it. And the commercial die manufacturers have no set standards for the Expander button in their dies. Large variations from manufacturing to manufacturing and even within a given manufacturi