TRH shredder is ideal to collect and shred sarments and prunings up to 8 cm in vineyards, orchards and olive groves in both stony and irregular ground. Both reversible and front – drive tractors mounting systems avoid driving over the prunings that are to be shredded. One special rotor brings the prunings into a space above the soil where the hammer rotor (2200 rpm/min) shreds the prunings. The rear of the machine has a discharge grating with gauge holes to control the size of discharged material. This double rotor collection system allows the collection of large quantities of wood, even of a large size. The collector rotors are driven by a hydraulic motor. It is possible to adjust the speed and to reverse the motion if too many prunings obstruct the entrance.