1812 Flex-Wing Rotary Cutter Cutting Width: 12-feet Cutting Capacity: 1-1/2-inch diameter Minimum Tractor HP: 50 to 75 PTO 1815 Flex-Wing Rotary Cutter Cutting Width: 15-feet Cutting Capacity: 2 1/2-inches diameter Minimum Tractor PTO HP: 60 2215 Flex-Wing Rotary Cutter Cutting Width: 15 ft. Cutting Capacity: 3 1/2″ diameter Minimum Tractor HP: 60 PTO 2810 Single Flex-Wing Rotary Cutter Cutting Width: 10-feet 6-inches Cutting Capacity: 4-inches diameter Minimum Tractor HP: 60 PTO 2814 Flex-Wing Rotary Cutter Cutting Width: 14-feet Cutting Capacity: 3-inches diameter Minimum Tractor HP: 90 PTO 2815 Flex-Wing Rotary Cutter Cutting Width: 15-feet Cutting Capacity: 4-inches diameter Minimum Tractor HP: 60 PTO 2820 Flex-Wing Rotary Cutter Cutting Width: 20-feet Cutting Capacity: 3-inches diameter Minimum Tractor HP: 90 PTO 3810 Single Flex-Wing Rotary Cutter Cutting Width: 10-feet 6-inches Cutting Capacity: 4 1/2-inches diameter Minimum Tractor HP: 60 PTO 3815 Flex-Wing Rotary Cutter Cutting Width: 15-feet Cutting Capacity: 4 1/2-inches diameter Minimum Tractor HP: 60 PTO 4815 Series Flex-Wing Rotary Cutter Cutting Width: 15 ft. Cutting Capacity: 4.5 in. diameter Minimum Tractor HP: 70 HP