The largest opening in the industry and the longest stroke. Rigid cast iron construction in a classic “O” frame design for maximum strength. Durable baked powder coat finish. 3 mounting holes mounts to any bench. Adjustable handle is moveable from right to left. Automatic priming arm with bottom of stoke priming for the best feel possible. Threaded die adapter accepts standard 7/8-14 dies. Remove the adapter and the press accepts 1-1/4-12 dies. Accepts standard shell holders.