The Toro 1068557 genuine OEM mowing blade is engineered for superior cutting performance and durability on Toro Groundsmaster series mowers. This high-quality blade measures 520.7mm (20.5 inches) in length, 63.5mm (2.5 inches) in width, and 5.16mm (0.203 inches) in thickness. It features a 15.88mm (5/8 inch) center hole and two 9.53mm (3/8 inch) outer holes spaced 63.5mm (2.5 inches) apart, ensuring a perfect fit and efficient operation on compatible models like the Groundsmaster 3280-D, 3320, 3500-D, and 3505-D.