Oregon Gator Mulcher 3-N-1 With Fusion Lawn Mower Blade For MTD 742-0645 942-0645 46-Inch Blade 518263 Fits MTD 46-inch Use (1) with (2) 518262 for set Blade length (measured diagonally): 14.9-inch Blade width 2.5-inch Blade center hole diameter 0.724-inch Y Shaped (replaces MTD 6 star) Outer hole:0.32-inch