QualityParts From Oregon That you can depend on. Center hole: 13/16": Requires 3 blades for 62" cut; High-lift: The aggressive blade angle increases air flow to push debris up-and-out for superior bagging or side discharge.; Superior mulching for bagging and discharge efficiency; Enhanced hardening to keep the blade sharper and more durable; Replaces major brand: John Deere; Oregon Equipment Parts 91-590 Blade John Deere M152727 -21