Lee Precision, Inc. 7x57mm Mauser Rifle Collet Neck Sizing Die

The Lee 7x57 Mauser collet neck sizing die employs a steel collet to compress the fired case against a precision mandrel, ensuring a precisely aligned case neck while minimizing runout. This process enhances accuracy and extends the lifespan of the case. The die sizes only the neck and does not require case lubrication. It is recommended for cases that have been fired exclusively through your firearm.