This 3-Die Set from RCBS comes complete with a sizer die with decapping unit, an expander die, and a seater die with crimp. Made of attractive and durable polished and heat treated steel. Kit includes sizer die (with decapping unit), expander die (for expanding and belling case mouth), and seater die (with roll crimp). Includes convenient plastic storage case. Cases must be lubed prior to sizing. Shellholder sold separately. Lifetime guarantee from RCBS.