This three-die set is intended for reloading straight-wall ammunition for period firearms used in Cowboy Action Shooting. The design allows optimum sizing, expanding, seating and crimping for lead bullet ammunition. Features a Steel Size Die, case lube required to lubricate the case before sizing Expander Die with a slightly larger expander to properly expand case to accept cast bullets Roll Crimp Seat Die to crimp case to bullet to eliminate bullet movement Comes in a Brown Die Box Limited Lifetime Warranty Made in USA Component and Caliber Reference Table