RTG Tillers Tilling Widths: 4′ to 7′ Number of Blades: 6 Tractor PTO HP Range: 15-65 RTX Series Rotary Tillers Tilling Width: 85 or 92 inches Number of Blades: 54 or 60 Tractor HP Range: 60-90 PTO RTC-50 Compact Tillers Tilling Width: 48 inches Number of Blades: 6 Tractor HP Range: 15-25 PTO