RCBS Single Stage shell holders are built from hardened steel and designed to properly align the case with the reloading die in single-stage and turret presses. The RCBS 9225 is specifically sized for 8mm Nambu cartridges and captures 0.125 inch of the case head for proper SAAMI headspacing.Key FeaturesCaliber/Gauge: Specifically designed for 8mm Nambu cartridges.Material: Constructed from hardened steel for durability.Compatibility: Fits single-stage and turret presses for efficient reloading.