The MTD 7810080 blade is a genuine OEM replacement part designed for various MTD, Cub Cadet, and Troy-Bilt lawn mowers. This standard blade features a 21-inch (533.4 mm) cutting length and a 6-point star center hole for secure attachment. It is engineered to provide efficient cutting and bagging performance, ensuring a clean finish for your lawn. Constructed from durable materials, this blade offers reliable and long-lasting operation.