This Greatbear Rotary Tiller Cultivator is designed to pierce the soil for secondary tillage. This Greatbear rotary tiller cultivator uses a rotary motion of disks or shanks to drag soil and move forward linearly. In farm and ranch, for the agricultural industry, before planting, the soil needs to be stirred and pulverized. Being different from a harrow, the tiller cultivator is created for disturbing the soil in a careful way and is more friendly to the earth. The Greatbear rotary tiller cultivator is also called scarifier, ripper, rototiller.