Hornady Shell Holders are precision machined from solid steel then heat treated to perform flawlessly for the life of the press. They fit all other Hornady accessories** (Case Trimmer, Hand-Held Priming Tool, etc.). Hornady steel shell holders also fit most other brands of reloading presses.
** The 50 BMG Shell Holder will only fit the 50 BMG Press and will not fit the other Hornady accessories.