The Quick-Change Lower Shell Holder Jaws provide unmatched efficiency and convenience for reloaders, streamlining the process of handling cases during reloading. These spring-loaded jaws securely support the case by contacting the base of the cannelure, ensuring a firm hold and positive extraction. Their self-acting design simplifies operation: when a cartridge is placed in the die and the handle of the Co-Ax Press is activated, the jaws automatically open and close around the case. As the handle is raised, the jaws release the case without any manual effort. Switching between different case sizes is effortless with the Quick-Change Jaws. By simply removing the 10-24 x 5/8 inches Button Head Screws (028271-020), you can quickly replace the jaws to accommodate the next case size and die. There's no need for the time-consuming steps of disassembling the Shell Holder Jaws, flipping sides, spring-loading the jaws or reassembling. This intuitive design enhances workflow and saves time, making the Quick-Change Lower Shell Holder Jaws a must-have for precision and efficiency in reloading.