This CSA-listed Egg Turner fits any Little Giant Circulated-Air or Still-Air Incubator. Electric motor automatically rotates the eggs to prevent the yolk from settling to one side and to exercise the embryo. Plastic cups hold 41 chicken eggs. (Turkey and duck eggs will not fit in this turner.) No assembly required. Dishwasher safe, easy to clean and operate. Quail rails for smaller eggs are sold separately.