RCBS 3-Die Carbide Taper Crimp Die Sets are expertly crafted from proprietary steel, offering unmatched precision for hand-loading enthusiasts. Each set includes a Carbide Sizing Die, Expander Die and Bullet Seating Die, ensuring superior performance with every round. Building on RCBS's legacy of pioneering 3-Die Sets for straight-wall rifles and pistol cases, these sets are specifically designed for straight-wall pistol cartridges. The Carbide Sizing Die eliminates the need for case lubrication, speeding up the sizing process. The Expander Die expands the case to the proper diameter and imparts a slight flare or bell at the case mouth, making bullet insertion smoother. Finally, the Bullet Seating Die seats the bullet securely and applies the correct taper crimp for a reliable, consistent round. Perfect for reloaders seeking top-tier performance and efficiency in their reloading process.