The same great features as the standard Custom-Grade New Dimension Dies with the addition of a Titanium Nitride coating on the resizing ring in the sizer die. Titanium Nitride is an extremely hard, smooth coating that's used on high-pressure, high wear tools. 3-Die set includes a straight wall sizer-decapper die, expander die and bullet seating die with a roll crimp for revolver cartridges and a taper crimp for autoloader cartridges. Shellholders sold separately.