FEATURES-Lee Taper Crimp Die-45 Colt (Long Colt), 454 Casull-Threads: 7/8"-14-Hardened steel designed to overcome crimp problems caused by poor die design-These dies offer little or no advantage when used with 1986 or newer Lee dies as the crimp angle is already a modified taper crimp-Jacketed bullets must have a crimp groove (cannelure)-Shellholder sold separately-Comes shipped with a plastic storage case