Oregon 97-012 Mower Blade, 15-3/4" Center hole: 13/16" Requires 3 blades for 46" cut High-lift: The aggressive blade angle increases air flow to push debris up-and-out for superior bagging or side discharge. Heavy-duty version of blade 97-123 Superior mulching for bagging and discharge efficiency Enhanced hardening to keep the blade sharper and more durable