Disc harrow is a compact disc tillage machine. The two rows of offset discs to work the soil are arranged for mixing and breaking of stubble in a single pass. In this tillage type, the disc move is changed with the working depth that is in turn changed by operating the hydraulic coupling height on the tractor: this changes the pressure on the disc, the disc angle to the tillage direction, this also enables a more aggressive cultivation of the discs into the soil. The overall machine is compact and easy to manoeuvre on the field and on the road. The machine is also very convenient in operation. Thanks to a machine this versatile the stubble and harvest residues are thoroughly mixed.