When it comes to reloading equipment, no one does it better than RCBS. So add to your first class equipment to help you achieve maximum accuracy with the RCBS Two Die Set Full Length. This two-die set features a massive Full-Length Sizer Die with Expander-Decapping Unit and Seater Die with Bullet Seater Plug. The set is designed for use with the AmmoMaster 2 or the AmmoMaster Single Stage press with the .50 BMG Conversion Kit installed. The dies feature the 1 1/2-inch-12 thread.