Hay tedders are primarily used for spreading and turning the mown grass mass. Evenly spread grass mass significantly accelerates drying. This reduces the losses caused by crushing, reduces the dependence on bad weather and improves the storage of nutrients in the mown grass.This machine is constructed with swivel heads under which there are wheels that perfectly follow the configuration of the terrain and thus allow the spring elements to evenly and gently grip the grass mass and distribute it behind the machine. The rotating elements of the two adjacent rotors rotate in the opposite direction so that the two and two rotors catch the grass mass between them and scatter it behind the machine.