Lee dies are machine-honed to the smoothest possible finish. The surface in Lee dies is progressively honed to a fine finish with no waves or ripples. These dies produce factory-dimensioned ammo that reliably fits and feeds in any gun. Full-length sizing is a must if you are reloading for more than one firearm or reloading cases fired in other firearms. Pacesetter 3-die sets include the Lee Factory Crimp Die to produce factory-like ammunition with improved utility and accuracy. Die sets also include a conventional bullet seater, roll crimper, shell holder, powder dipper, and load data neatly packaged in a storage box with a clear lid.