This 2-Die Set is designed specifically for reloading bottleneck cases, providing precision and consistency in every reloading session. The set includes a Full-Length Sizer Die with an Expander-Decapping Unit and a Seater Die with a Bullet Seater Plug. The Full-Length Sizer Die resizes the case to SAAMI minimum cartridge dimensions, ensuring the outside of the case is properly sized, while also de-priming and expanding the neck to accept the bullet. Vents in the die help to prevent case damage by releasing trapped air and excess lubricant during sizing. The die also maintains strict headspace tolerances, ensuring the case body length remains unchanged during the full-length sizing process. The Seater Die comes equipped with a built-in roll crimper, which securely seats and crimps the bullet at the same time, ensuring a tight and reliable fit. This 2-Die Set is ideal for bottleneck case reloading, ensuring excellent performance and high-quality results with each reload.