The Pow'r Punch Decap Rod is designed for use with pistol calibers in progressive presses. The rod has a spring-loaded decapping pin that ensures the spent primer is always fully ejected from the primer pocket. It eliminates indexing problems with progressive presses caused by the spent primer jamming the shell plate. The Pow'r Punch Decap Rod works in all RCBSA(R) pistol sizer dies; RCBS pistol sizing dies equipped with the Pow'r Punch Decap Rod Assembly will work in any brand's progressive press that uses standard 7/8-inch-14 threaded dies. For use with pistol calibers in progressive presses Spring-loaded decapping pin ensures the spent primer fully ejects Mfg: Rcbs