Product Summary
The K&M Powerstroke Expand Mandrel Holder is a precision tool designed to hold the Powerstroke Expand Mandrel (sold separately) for proper case sizing. It is essential for preparing virgin or competition brass for neck turning, as commercial dies often lack standardized expander buttons. By properly sizing the inside diameter before turning, you ensure a consistent fit that prevents the brass from springing back. The holder features a 7/8-14 threaded adapter that fits standard reloading presses and is engineered to work perfectly with the K&M MICROADJUSTABLE Neck Turner.
