Male Spline: 1-3/8" x 6

Easy one hand operation: spring-lock open / closure mechanism

Genuine OEM Agri-Fab - 63929BL1 - Ass'Y

PB185A46LT

Oregon 92-151 Heavy Duty Blade for 52" Ariens, Gravely - 00273100, 00450300, 03253800, 04916400, 3253800, 450300 Blade Length - 18-15/16" Male Spline: 1-3/8" x 6Specifications: Blade Width 2. 50" Thickness 0. 250" Blade Length 18" Center Hole Size 5 8" OffSet 5 16" Air Lift 1 1 8" Product Description The Oregon 92 151 replacement lawn mower blade is made to the exact OEM specification for optimum performance. Our blades are individually straightened and hardened to provide a consistent, cleaner cut and increase blade longevity. Product Details Center hole: 5 8" Requires 2 blades for 36" cut Requires 3 blades