The MTD 7420651 is a genuine OEM 21-inch mulching blade designed for MTD, MTD Gold, Yard-Man, Yard Machines, Huskee, and Bolens walk-behind lawn mowers with 21-inch decks manufactured from 2008 onwards. This durable blade features a 6-point star center hole and is engineered for optimal mulching performance, providing a finely cut finish. It measures 533.4 mm in length, 57.15 mm in width, and 3.78 mm in thickness.