The Dillon .45 ACP RL 550B Caliber Conversion Kit is a box of the calibre-specific items required to convert your Dillon RL 550B progressive reloading machine to be able to load .45 ACP and similar calibre ammunition. Dies are not part of this kit, and should be procured separately.
Shooting Stuff prices and supplies the calibre conversion kit separately for the RL 550B, so it is required for the first and any subsequent calibres. This is just the way Dillon supplies the system to us! This kit comprises the 4-station shell plate, three brass locator buttons and powder funnel, the silver, cylindrical insert that goes in the powder die.