The Rollsizer Caliber Conversion Kit – .38 S / .38 SC is specifically designed to process .38 Super and .38 Super Comp brass using the Rollsizer Mini Roll Sizer Machine Base. It includes all caliber-specific components required for precise and consistent case resizing, especially important for these more delicate case types. This kit allows for quick caliber changes and is ideal for sport or competition shooters who depend on uniform case quality.