As the name implies the RCBS Heavy Duty Depriming and Decapping Die Replacement Decapping Assembly - .27 thru 45 Caliber is for specific calibers. With this ideal reloading accessory cases that have not been cleaned or lubricated are deprimed before being cleaned in a case cleaner. On name alone consumers can feel confident in the construction of this die. Very quickly primers from cases are removed which saves time and prevents frustration. For avid shooters this die is made to work with the RCBS Heavy Duty Depriming and Decapping Die that ultimately improves accuracy.