QualityParts From Oregon That you can depend on. Center hole: 5/8": X-Tended Cutting Lengthâ„¢ optimizes the cutting efficiency with each revolution; Requires 3 blades for 74" cut; XCaliber x-style blade; Enhanced mulching for bagging and discharge efficiency; Stays sharp and durable for longer; Replacement for major brand: Dixie Chopper Oregon Equipment Parts 91-526 Blade Dixie Chopper 26In[367]