The Co-Ax Press Shell Holder ensures perfect alignment during your reloading process. Its innovative floating jaws allow the cartridge to find its exact center in the die, ensuring consistent and accurate results every time. When the case is placed in the shell holder, it is supported by spring-loaded jaws that make contact with the base of the cannelure, ensuring more positive extraction. This self-acting shell holder automatically adjusts as you work. When you activate the handle of the Co-Ax Press, the jaws open and close around the cartridge case for secure positioning. When the handle is raised, the jaws automatically release the case, streamlining the reloading process and ensuring smooth, efficient operation.