MFR: 10201 UPC: 0766831020104For shooters who demand reloads equal to the quality of their guns. Each RCBS Die is made from case hardened steel. The inside surfaces of all dies are precision-drilled and reamed to the same exacting standards as the finest fun mechanisms. Full-Length Sizer Dies for bottleneck cases have vents to prevent case damage caused by trapped air and for excessive lubricant. Headspace is held to minimum tolerances to avoid changing the case body length during full length sizing. Dies are properly hardened and hand polished. This special RCBS finishing produces a die that will withstand years and years of the abrasive type of wear cause by the sizing. All RCBS Seater Dies have a built-in roll or taper crimper as appropriate for the particular caliber. To seat bukkets without crimping, simply unscrew the die until the crimp ring no longer engages the case mouth. Large, Easy-to-adjust hex lock rings utilize hex head set screws. Unless otherwise noted, all RCBS precisioneered Dies have the standard 7/8"-14 thread. Dies are packaged in stackable, plastic storage boxes specially designed to protect the dies in shipping. Includes loading data label.