The MTD 74204080 is a genuine OEM left-hand cutting blade designed for various MTD, Cub Cadet, and Troy-Bilt lawn tractors. This blade measures 21.25 inches (539.75 mm) in length and features a 6-point star center hole, ensuring a precise fit and optimal cutting performance. It is engineered for durability and efficient grass cutting, providing a clean finish for your lawn.