DILLON CARBIDE 3 DIE SET 357 SIG, The Dillon .357 SIG Carbide Handgun 3-die set is used for reloading .357 SIG ammunition. This 3-die set includes a sizing/depriming die, a bullet seating die and a crimp die. Dillon dies are designed to work best on Dillon progressive reloading machines. Although all Dillon dies have standard 7/8"x14tpi threads, the handgun die sets do not include an expander die as this function occurs in the powder dispensing station; the calibre-specific powder funnel is part of the calibre conversion kit. The new 1" lock rings allow a little more space on the tool head (when adjusting the dies) for the 1" wrench to fit. We recommend using Dillon case lube even on carbide pistol dies; you'll feel the significant reduction in force required to operate the machine.