The Mystery® nozzle incorporates a twist-type shut-off; opening in straight stream and producing a flow from straight stream to wide fog. In combination with a B-375A ball shut-off, the Mystery® nozzle promotes an extremely convenient method of advancing hoselines. Simply close the ball shut-off, remove the Mystery® tip, attach additional hose and then reattach the tip at the end of the line. The tip’s built-in shut-off allow for the line to be advanced rapidly without bringing in an additional nozzle. Product Documents: