Oregon 98-640 Lawn Mower Mulching Blade, Gator G5, 16-1/4-Inch, Replaces Cub Cadet, MTD, Troy-Bilt, Bolens Center hole: 5/8" 6 point star Aggressive blade angle increases air flow to push debris up and out for superior bagging or side discharge. Gator Mulcher provides cleaner, more efficient cutting performance can eliminate the need to bag, saving time and hassle. Replaces major brands: Cub Cadet and MTD