A turbine type agitator, available for 19mm and 28mm shafts. 19mm six blade agitators are open in the center to allow custom positioning on drilled type or knob type 8076, 8078 & 8079 shafts. 28mm four blade agitators are supplied with a PTFE nut & bolt set for securing to 8080 shafts. Shaft is not included.