QualityParts From Oregon That you can depend on. Center hole: 1/2": Requires 3 blades for 60" cut; The aggressive blade angle increases air flow to push debris up-and-out for superior bagging or side discharge; Stays sharp and durable for longer; Fits Country Clipper Models: JaZee Pro , Charger, Boss; ; Oregon Equipment Parts 91-128 Blade Country Clipper H2649