Used just like a standard size die but while you are pushing the case into the die to size it, a ¼ horsepower electric motor is trimming the case to length. Chips are drawn off through a vacuum manifold that clamps to the outside of the special size/trim die. (Vacuum cleaner and hose not included.) It is equipped with a quick-disconnect power cord; and it can be used on any standard reloader, single stage or progressive. Size/trim dies sold separately.