The RCBS 9233 Shell Holder #33 is a precision-engineered reloading component designed specifically for .50 Action Express (.50 AE) cartridges in single stage reloading presses.RCBS Model 9233 Shell Holder #33Compatible with .50 AE caliber cartridgesDurable steel construction with silver finishWeighs 4 oz for solid stable operationSize #33 designation for proper cartridge head fitEssential for reloaders working with .50 AE ammunition this shell holder ensures secure case grip and proper alignment during the reloading process for consistent reliable results.