MTD Genuine Parts Xtreme Mulching Blade Set - Fits Mowers with 46-Inch Decks Fits tractors with 46" decks For Troy-Bilt, MTD, Yard-Man, Yard Machines, Huskee and Bolens units For extreme mulching and bagging performance (compared to standard non-mulching blades and standard side-discharge non-OEM blades) Extreme durability and effectiveness, lets you bag up to 50% more grass and outlasts standard blades in sandy conditions Star center hole