The Lyman .451 H&I Bullet Sizing Die features an improved design with 90-degree hole spacing and a hardened interior for exceptional bullet sizing performance in reloading applications.Lyman .451 H&I Bullet Sizing DieHardened interior construction for durabilityTapered mouth ensures proper bullet alignment90-degree hole spacing for improved designRCBS compatible for versatile useDelivers outstanding cylindrical bullet shapeEssential for reloaders seeking precision bullet sizing this competitively priced die from Lyman's trusted line of casting and reloading equipment ensures consistent results for .451 caliber applications.