QualityParts From Oregon That you can depend on. 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.; Superior mulching for bagging and discharge efficiency; Enhanced hardening to keep the blade sharper and more durable; Replacement for major brands: Murray, Scott; Oregon Equipment Parts 97-123 Blade Murray 092117E701Ma 15