The RCBS Universal Depriming and Decapping Die quickly removes primers from cases prior to cleaning. Designed for the reloader with a light duty decapping or depriming job in 22 through 25 calibers. Reloaders with a heavy duty decapping or depriming job (for crimped in primer pockets in 27 through 45 calibers) the RCBS Heavy Duty Decapping Die item# 172544 would be better suited . Plastic storage box is included.