These Competition Pro Series three die sets are also designed for use in progressive reloading machines by reloaders seeking the most advanced bullet alignment available. Since carbide dies are not available for certain cartridges, the sizing die is Redding's unique 91000 series in heat-treated steel. To apply a tighter, more uniform roll type crimp, our popular Profile Crimp Die is used. No expander die is included, as most popular progressive machines expand the case mouth at the powder metering station. Includes a Sizing die, Competition Seating Die with Micrometer, and Profile Crimp Die. Mfg: Redding