The Hornady Custom Grade New Dimension Die Seater Stem is the perfect addition for the reloader utilizing specialty Hornady bullets like the popular FTX bullet or the super accurate A-Max or ELD/ELD-X bullet. Simply remove the standard seating stem from your Custom Grade New Dimension Seating Die and install the new stem. The die stems will only work with Hornady Custom Grade New Dimension Seating Dies, and caliber listed in description.