The Lyman Custom Fit Loading Block with 0.485" diameter holes provides precise cartridge organization for reloaders working with popular rifle and pistol calibers. Made from tough durable polymer and designed to hold 50 cartridges securely.Lyman Custom Fit Loading Block with 0.485" holes50-cartridge capacity for efficient reloading sessionsDurable polymer construction for long-lasting useStackable design for organized storageCompatible with 30+ calibers including .308 Win .30-06 6.5 Creedmoor .243 Win .45 ACPFits popular cartridges from .22-250 to .450 BushmasterClearly marked hole diameter for easy identificationEssential for reloaders who work with multiple calibers this loading block ensures safe cartridge handling and organized workflow during ammunition preparation and loading operations.