Lee 223 Pacesetter 3-Die Set includes Full Length Sizing Die Micrometer Bullet Seating Die Factory Crimp Die Universal Shell Holder powder measure and instructions with load data. Select this die set if you are reloading mixed range brass. This die set may be used to load 5.56 NATO (5.56 x 45mm) brass. You must follow load data published for the 5.56 NATO available from your favorite powder manufacturer.