The RCBS Die Lock Ring Wrench is an innovative reloading tool designed to simplify the adjustment of your reloading dies. Created by the experts at RCBS, this versatile hand tool is specifically crafted to work seamlessly with the RCBS Full Length Sizer and Seater Die, making it ideal for use with bottleneck cases. Built with precision in mind, this wrench ensures that your dies are securely locked in place, allowing for consistent and accurate reloading every time. One standout feature of the RCBS Die Lock Ring Wrench is its compatibility with the RCBS Group D Full Length Die Sets. These sets include a Full-Length Sizer Die that features an Expander-Decapping Unit, bringing cases to SAAMI minimum cartridge dimensions, de-priming, and expanding the neck to accept bullets. Designed to maintain consistent headspace, the Full-Length Sizer Die prevents alterations to the case body length during sizing, ensuring reliability and performance. Accompanying the Sizer Die in the RCBS Group D Full Length Die Set is the Bullet Seating Die, which includes a built-in roll crimper. This crimper securely seats the bullet while simultaneously crimping it, providing a stable and precise load. To enhance user convenience, each RCBS Die Set comes with a comprehensive instruction manual and lubricating oil, streamlining the reloading process and ensuring that even beginners can achieve professional-level results. Choose the RCBS Die Lock Ring Wrench and RCBS Die Sets for dependable, accurate reloading that meets the highest standards of precision and performance.