100% Hardened Steel with a black oxide finish. The Hold Down tip is M2 steel at 65 Rockwell. The spring design allows upward case movement before a stop and swage, Dynamic. The gravity guide will center the cases. We offer a 7 day “MONEY BACK GUARANTEE” on the XMS steel die. A tool free die design that offers the power and reliability needed for high speed operation. The XMS doubles as a Decapping Die, just swap the tip.