Dillon Precision 22058 Deluxe Quick Change Assembly Fits RL 550 B Powder Drop
With a quick change assembly and a caliber conversion kit (sold separately), you can convert in less than a minute. Complete with: Toolhead, Powder Measure, Powder Die, Toolhead Stand.
550 Quick Change, Reloading Accessories, Reloading Parts, Dillon Precision, Dillon 550 Quick Chage