This equipment has been designed to work in stony soils, because it improves their preparation in agriculture, greenhouses, parks, gardens and golf courses. Due to a special selection system, the stones can be shared from the soft soil and laid at the bottom of the ground, keeping the sieved soil on top. It is possible to combine the specific seeder for grass (option). 3 models are available following the working widths as: 100, 120 and 135 cm. 540 rpm gearbox single speed, automatic chain stretcher, slip clutch drive shaft, rotor with 4 blades (helicoidal) per flange, roller for depth adjustment, spring steel screen, adjustable 3 point hitch cat. 1st.