Lee 458 Socom Very Ltd. Production 3-Die Set. Includes Full Length Sizing Die, Bullet Seating Die, Powder Thru Expanding Die, Universal Shell Holder, Powder Dipper, and Instructions/Load data. Specifications: - Cartridge: 458 Socom - Extra Features: Expander Die Labeled 50-500 not 458 SOCOM - Number of Dies: 3 - Die Type: Sizer, Expander, Seater - Threads: 7/8"-14 - ShellHolder Included: Yes - Storage Box Included: Yes - Weight: 1. 17 lbs.