Dillon Precision caliber conversion kits allow you to adapt your machine from one caliber to another in minutes. They are a great way to maximize machine use when reloading multiple calibers. Caliber conversion kits vary by machine type, and include various parts for each machine to quickly change calibers. IncludesShellplateLocator ButtonsLocator Button TabsPowder Activator/FunnelSwage Backup/ExpanderCasefeed AdapterCasefeed Plunger Note: As of 03/16/2021, the shellplate thickness was increased to .250" and the shellplate lock ring thickness was reduced from .410" to .375". If you have a thicker shellplate lock ring, you will need to order a new shellplate lock ring.