Special equipment with Michel ballasts, suitable to be used in conjunction with other machines such as rotary harrows, disc harrows, etc. to till the soil on two layers without overturning it. The decompactor goes deep down and breaks up the soil and the machine it is combined with carries out the finishing steps on the soil’s surface. All the ballasts have a safety bolt in the event of collisions with fixed obstacles and the special chassis allows a cardan shaft to pass through in order to transmit motion to the machine at the back. The coupling of the second piece of equipment can either have a mechanical or hydraulic adjustment.