The RCBS MatchMaster Multi-Cartridge Reloading Block revolutionizes bench efficiency with its innovative DuelFit Design that holds two cartridge sizes in one block. Precision-machined from 6061-T6 billet aluminum and proudly Made in the USA.RCBS MatchMaster Multi-Cartridge Reloading Block (Model 9499)50-cartridge capacity with generous spacing for easy handlingDuelFit Design accommodates .223 Remington and .308 Winchester familiesCompatible with .384 and .470 bolt face diameter cartridgesPrecision-engineered case holes for secure cartridge placementStackable design with no-slip feet for bench stabilityPass-through powder holes for ultra-clean operationLifetime durability from solid 6061-T6 aluminum constructionPerfect for serious reloaders who demand efficiency and precision this block streamlines workflow by replacing two separate blocks while maintaining full capacity and professional-grade quality.