SPECIFICATIONS Farm King Brush Mower - Series 2 Model 510 Catergory 1 - 3 Point Hitch Style Cutting Width: 60.0 in Cutting Height: min. 4.0 in Blade Tip Speed: 12721 ft/min No. of Blades: 2 Spring Steel Blade: 1/2" x 3" heat treated Gearbox: Closed 540 rpm Gearbox Rating: 40 hp Tractor Required: 25-65 hp PTO Shaft: Shear Pin Stump Jumper: 24 in diameter Weight: 686 lbs