This fine selection of hand tools from Lyman performs the three most important steps in achieving a clean, uniform primer pocket and flash hole in preparation for seating a new primer. Each tool features an unbreakable, comfortable, cushioned, ergonomic polyurethane handle. Primer Pocket Reamer cleans up any burrs left on the edges of the pocket after removing the spent primer. Strong enough to remove a military primer crimp with a few simple twists. Mfg: Lyman