Features: heavy-duty cast iron frame with large 4-1/2” opening, offset/straight pull ball handle for ease of operation, “smart” primer arm moves in and out of position with ram travel, and heavy duty compound linkage. Steel adapter bushing accepts all standard 7/8"-14 threaded dies and is removable for use with oversized dies. Frame with bushing removed accepts 1-1/4” x 12 dies.