The Collet Neck sizing die is used on your resizing your cartridge case neck to exact measurements. It functions by using a Collet to squeeze against a precision mandrel, creating a precisely aligned case neck for a perfect bullet fit while reducing run out.
Sizes only the neck and requires no lubrication.
Features & Specifications:
- Includes Collet Neck Sizing Die Only
 - Thread - 7/8-14"
 - Manufactured in the USA