The MTD 74204417 is a genuine OEM 21-inch 2-in-1 mulching blade designed for various MTD, Cub Cadet, Troy-Bilt, and other compatible 21-inch walk-behind lawn mowers. This versatile blade provides excellent mulching capabilities and efficient side discharge, ensuring a clean and healthy lawn. Featuring a 6-point star center hole, it ensures a secure fit and reliable performance. Made from durable steel, it offers long-lasting sharpness and resistance to wear for optimal lawn care.