Set of three (3) Heavy Duty Rotary Brand replacement blades that fit multiple Gravely models. These blades are 24-1/2″ long x 2-1/2″ wide with a 5/8″ center hole and .2400″ thick. Requires (3) of 72″ Cut Gravely. This is a heavier material than standard blades, .240″ versus .204″. Blade specs are as follows: Overall Length: 24-1/2″ Width: 2-1/2″ Thickness: .2400″ Mounting Hole: 5/8″ Fits Models: 44444 72″ PM400, 47687 60″ PM Series, 47687 60″ PM Series, 47688 50″, 47688 50″ PM Series, 47688 50″ PM Series, 47689 72″ PM Series, 50465 72″ PM400, 785067 50″ (Ride-On), 785067 50″ (Hand-On), 785067 50″ PM Series, 787054 60″ PM Series, 787054 60″ P Series