The UL Rotary Tiller is suitable for tractors from 20 to 40 horsepower with a category 1 hitch. The UL models are light-duty and dependable, appropriate for gardening and horticulture. Product Family: UL Series Product: UL-48 Description: 48" Light Duty Gear Drive Tiller Rotation: Forward RPM: 540 HP Required: 20 - 25 Working Width: 48" Max Working Depth: 7" # of Flanges on Rotor: 6 # of Tines per Flange: 6 Total # of Tines: 36 Rotor Thickness or Diameter: 3" Rotor Swing Diameter: 15" Overall Width: 53"