The swaging station adds a chamber to the inside of the primer pocket to ensure proper primer seating. If there is an obstruction, it prevents the swage rod from entering the primer pocket by either a partially ejected primer (often called a "ringer") or a small primer pocket. SWAGESense uses Mark 7 proprietary technology to not only perform a swage operation, but can also detect a ringer and small pocket primers. SWAGESense is constructed using hard anodized aluminum and comes complete with two hardened chromoly swage rods - for both small and large primer pockets. FeaturesSwages the toughest military crimped brassDetects small/large primer ringers particularly found in wet washed brassDetects small primers in .45ACP brassWhen encountering a blockage or small pockets (using large rod), it can stop the machine and alert you through your tabletDramatically reduces probability of breaking swage rods