The MTD 7420213 is a genuine OEM cutting blade, specifically engineered for a wide range of MTD, Cub Cadet, Troy-Bilt, and Yard-Man walk-behind lawn mowers. This 21-inch (533.4 mm) standard blade ensures precise and efficient grass cutting, contributing to a clean and well-maintained lawn. Constructed from durable materials, it provides reliable performance and a long service life. Regular replacement of worn blades is crucial for optimal cutting quality and mower efficiency.