This genuine MTD 7190329 lawn mower blade is a 21-inch replacement blade designed for optimal cutting performance. Featuring a 6-point star center hole, it ensures a secure fit on compatible MTD, Cub Cadet, Troy-Bilt, Yard-Man, and Yard Machines walk-behind lawn mowers. Constructed from durable materials, this blade provides a clean cut and is an essential component for maintaining your mower's efficiency. It replaces several OEM part numbers including 742-0329, 942-0329, and their variations.