Oregon Gator Mulcher 3-N-1 Blade For 50-Inch AYP Husqvarna Poulan Pro And Sears/Craftsman Lawn Mowers 95-609 Replaces OEM No. 137380, 137380MS, and 532137380 Order 3 for a 50-Inch Cut Blade Length (Measured Diagonally): 17-3/8-Inch Center Hole Diameter: 5/8-Inch. Star Width: 2.50-Inch and Thickness: 0.187-Inch