This Lee collet-style crimp die incorporates a collet to apply a rifle type crimp to the case. Makes these very difficult to crimp cartridges a delight to Reload. Bullets do not need a crimp groove, as the collet is so powerful it will form one. Note: this die is not carbide. Specifications: - cartridge: 460 S&W Magnum - number of dies: 1 - die type: profile crimp die - threads: 7/8 inch -14 - shellholder included: no - storage box included: yes