Tapered expander dies are used for expanding the neck of bottleneck cartridges when converting from one caliber to another. Like all RCBS dies, these dies are carefully machined to exacting tolerances, then hardened and hand finished. The result is a quality reloading die that will offer a lifetime of use. Tapered center insert expands case neck.
This type of die is often used for case forming and custom applications.
Die has no depriming function.
Die body has standard 7/8 x 14 threads.