This product is a die only unit, designed to meet the needs of precision reloading enthusiasts. While these dies do not come with a shellholder, they are fully compatible with standard shellholders from well-known manufacturers like Redding, Hornady and RCBS. For those seeking enhanced versatility, these dies also integrate seamlessly with our ZERO modular shellholder system, offering users a flexible and customizable reloading experience. 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