QualityParts From Oregon That you can depend on. Center hole: 5/8": Requires 3 blades for 60" cut; Requires 2 blades for 41" cut; Stays sharp and durable for longer; High-lift: The aggressive blade angle increases air flow to push debris up-and-out for superior bagging or side discharge; Replacement for major brand: Country Clipper; Oregon Equipment Parts 92-138 Blade Country Clipper H-2655