This precision engineered 2-die set is built for bottleneck rifle cases and includes a full-length sizer die with integrated expander decapping unit and a seater die equipped with a bullet seater plug and built-in roll crimper. The sizer die resizes cases to SAAMI minimum dimensions, de-primes spent primers and expands the neck for consistent bullet seating-all while featuring internal vents to prevent case deformation from trapped air or excess lube. Tight tolerances on headspace ensure consistent chamber fit without altering body length. The seater die finalizes your round with secure bullet seating and crimping in one smooth operation. Threaded to standard 7/8 inches -14 for reloading die compatibility Built from proprietary die steel for exceptional durability and long-lasting performance Includes full length sizing die and bullet seating die for precision reloading Sizing die reshapes brass cases to SAAMI specs for safe, uniform reloading Ships conveniently packed in a green die box