The Hornady Primer Pocket Reamer Kit is an essential reloading tool designed for large primer pockets making military brass reloadable by effectively cutting away primer pocket crimps.Hornady Primer Pocket Reamer Kit for Large PrimersRemoves military primer pocket crimps from brass casesEssential tool for processing military surplus brassPrecision-engineered for consistent resultsPerfect for reloaders who work with military brass this reamer ensures proper primer seating and reliable reloading performance by removing the crimped primer pocket material.