All of Lee's presses and dies are made with 7/8" x 14 thread, which is considered industry standard. If you have another brand of press that uses this same thread our dies will work. Conversely, other brands of dies made for industry standard presses will work in all of our presses.
Dies of newer manufacture have threads that are 1.90 inches tall as opposed to the shorter threaded dies of 1.7 inches. This measurement should be taken from the bottom of the die body to the top of the threads. This was done in an attempt to adapt our dies for use in presses that use thicker tool heads. Unfortunately, we can't guarantee that the threads are long enough to work flawlessly in all presses.