The MTD GW1772552 is a genuine OEM mulching blade designed for 42-inch cutting decks on MTD, Cub Cadet, Troy-Bilt, Yard-Man, Yard Machines, Huskee, Bolens, and White Outdoor lawn tractors and zero-turn mowers. This high-quality blade measures 520.7 mm (20.5 inches) in length, 57.15 mm (2.25 inches) in width, and 3.81 mm (0.150 inches) in thickness, featuring a 6-point star center hole for secure fitment. It ensures efficient mulching performance, promoting a healthier lawn.