100% Hardened Steel with a black oxide finish. Pins are M2 steel at 65 Rockwell. The spring design allows upward pin movement before a stop and decap, the rebound of the spring flicks the primer off the pin and shoots it thru the press funnel. The gravity guide will center cases.
A tool free die design that offers the power and reliability needed for high speed operation. The XMS doubles as a Hold Down Die, just swap the tip.