This genuine MTD 4350405 mulching blade is designed for optimal cutting performance on various MTD brand lawn tractors, including Cub Cadet LT1040, LT1042, LT1045, LT1046, and Troy-Bilt Horse, Super Bronco models. Measuring 562 mm (22.125 inches) in length, 63.5 mm (2.5 inches) in width, and 3.81 mm (0.150 inches) in thickness, it features a 6-point star center hole for secure mounting. This blade replaces multiple OEM part numbers, ensuring a precise fit and efficient mulching action for a healthier lawn.