RT60G/RT60GR, RT72G/RT72GR, RT84G / RT84GR Series Tilling Width: 59 to 82 1/2-inches Number of Blades: 6 Tractor HP Range: 25-65 PTO RTX Series Rotary Tillers Tilling Width: 85 and 92 inches Number of Blades: 54, 60 Tractor HP Range: 50-90 PTO RTC-50 Compact Tillers Tilling Width: 48 inches Number of Blades: 6 Tractor HP Range: 15-25 PTO