The Stens Genuine Part 355-343 Notched Hi-Lift Blade (Pack of 9) is designed for exceptional cutting performance, providing optimal lift and airflow for superior grass collection. With a 20 1/2" length, 2 1/2" width, and a durable 15/16" center hole, these blades ensure a secure fit and smooth operation for an efficient, vibration-free mowing experience. Crafted with a heavy-duty .250" thickness, these blades offer long-lasting durability, making them the perfect choice for tackling tough mowing conditions with ease.