The MTD 7420508 is a genuine OEM high-lift blade, precisely engineered for optimal cutting performance and grass discharge. Measuring 21.20 inches (538.48 mm) in length, this blade features a 6-point star center hole, ensuring a secure fit on compatible MTD, Cub Cadet, and Troy-Bilt riding lawn mowers and lawn tractors. Its high-lift design creates increased airflow for superior bagging and mulching capabilities, promoting a cleaner cut and a healthier lawn. Constructed from durable materials, it provides reliable and long-lasting operation.