Lyman was the originator of the Tungsten Carbide (T-C) sizing die and "Multi" concept with the addition of extra seating screws for pistol die sets. Combined with another Lyman original - the two step neck expanding die, our Multi Deluxe Die Sets offer these features: a one piece hardened steel decapping rod and extra seating screws for all popular bullet nose shapes, and all steel construction. For the proper bullet alignment order the Lyman Premium Carbide 3 Die Sets.