Center Bore: 7/8″ Tungsten Carbide is “fused” into the blade, creating a super-hard layer on the cutting edge and extending the time between sharpenings. X-Tended Length of Cut optimizes cutting efficiency with every revolution. The Gator Mulcher delivers a cleaner, more efficient cut that can eliminate the need for a bag, saving time and hassle. High Lift: Aggressive blade angle increases airflow to push debris up and out for superior bag collection or side discharge.