A haymaking machine having rotors provided with secured tools, which machine includes at least one rotor having at least one radially extensible rotary support arm, with an inner end connected to the rotor hub and an opposite outer end carrying at least one working tool possessing spikes connected by an intermediate portion presenting coils on the one hand and at least one angled section for fixation to the support arm on the other hand, the arm extends internally through at least some of the coils and a piece for retaining the coils and not coupled with the support arm is attached to this latter. The retaining piece integrates at least one part of the one or more means for fixation of the working tool on the support arm.
