The "O" frame press by design is the strongest. This is by far the most popular style press. The larger than average opening is angled at 30 degrees for maximum hand clearance. The spent primer catcher can route spent primers directly to the trash can. This press includes the Breech Lock Quick Change die system. Change dies instantly with a twist of the wrist, and you never have to re-adjust your die. Other features include all steel linkage with adjustable length lever.