Quickly removes primer pocket crimp from military cases. Unlike reaming, the Pocket Swager forms a perfectly round pocket correct in dimensions for American boxer-type primers. Comes with swaging heads for large and small primer pockets. Uses RCBS removable shellholders (sold separately). Not for use on progressive presses. Includes 2 Swager rods: (Smallest is for 223 only), 1 Case stripper, 1 Large and 1 Small swager head (for primer pockets) and 1 Swager die body with locking ring that has standard 7/8″ X 14 threads for use with standard single stage presses.