The Forster Inside Neck Reamer for .264 caliber bullets provides precision neck reaming with exact diameter specifications of .266-.2665 inches for optimal cartridge case preparation.Forster Inside Neck Reamer - .264 Bullet DiameterPrecise diameter range: .266-.2665 inchesEliminates excess brass from case neck wallsMounts in Case Trimmer for accurate operationConstructed from durable steel for long-lasting performanceDesigned for unsized and untrimmed fired casesCreates perfect symmetry across entire bullet diameterEssential for reloaders experiencing thick case necks that can cause chamber pressure and accuracy issues. Prevents flyers by ensuring proper neck wall thickness and consistent bullet seating.