The helical-shaped rotor on the RT Series Rotary Tillers decreases horsepower required to drive units. They are designed so they enter the field at different times for more efficiency.
A feature on the larger models is a Category 1 or Category 2 hitch.
The RR1157, RT1165, RT1173, and RT1181 Rotary Tillers are compatible with a Category 1 3-point hitch or iMatch™ quick-attach hitch system. These models are also compatible with a Category 2 3-point hitch or Category 2 Quik Coupler.