This high-quality, case-hardened steel two-die set is a foundational tool for precision bottleneck rifle cartridge reloading. It includes a Full-Length Sizer Die equipped with an expander-decapping unit to resize outer case dimensions back to SAAMI specifications while punching out spent primers. It also includes a Bullet Seater Die with a built-in roll crimper, allowing you to seat and lock the bullet firmly into place.