Oregon 2 Pack Gator Mulcher 3-n-1 Lawn Mower Blade Sears 127842,532139774 138497, Replaces OEM No.127842,532139774 138497, Blade length (measured diagonally): 19.3-inch Blade width 2.5-inch Blade center hole diameter 0.630-inch Star Shaped AYP/Sears/Craftsman 38-inch cut