The Oregon 91394 standard mower blade is a high-quality replacement part designed for durability and efficient cutting. This blade measures 520.7 mm (20-1/2 inches) in length, 57.15 mm (2-1/4 inches) in width, and has a thickness of 3.81 mm (0.150 inches). It features a 15.88 mm (5/8 inch) center hole, making it suitable for a range of lawn mower applications. Engineered for optimal performance, this blade ensures a clean cut and extends the life of your mowing equipment.