In addition to compatibility with standard shellholders, these dies are also designed to work seamlessly with our ZERO modular shellholder system. This system offers enhanced flexibility and precision, making it a valuable addition for users seeking to optimize their reloading process. The integration with our modular system underscores our commitment to providing versatile and user-friendly products. Precision-ground expander mandrels - each die set includes a 0.002 inches neck tension mandrel, for additional tension increments, utilize our comprehensive mandrel kit Full-length sizing from neck to extractor Mechanism for automated ejection of expended primers in spring-loaded systems Interchangeable high-durability steel decapitation pins for enhanced operational efficiency Precision reamer machined to exact specifications for accurate sizing (eliminates bolt adhesion issues post-second operation) Hydraulic shoulder pressure relief system Manufactured in the United States