This aftermarket 78964 blade set includes three durable high-lift blades, each measuring 469.9 mm (18-1/2 inches) in length and 57.15 mm (2-1/4 inches) in width. Designed for efficient cutting, these blades have a 15.875 mm (5/8 inch) center hole and a 9.525 mm (3/8 inch) outer hole with a 38.1 mm (1-1/2 inch) center-to-center distance. With a thickness of 3.81 mm (0.150 inches) and a 25.4 mm (1 inch) lift, this set is engineered to replace OEM parts such as Exmark 1633482 and Toro 1073197, ensuring optimal performance and a clean cut for various lawn mower applications.