QualityParts From Oregon That you can depend on. Center hole: 5/8": X-Tended Cutting Lengthâ„¢ optimizes the cutting efficiency with each revolution; Enhanced mulching for bagging and discharge efficiency; Stays sharp and durable for longer; Replacement for major brand: Dixie Chopper; ; Oregon Equipment Parts 91-515 Blade Dixie Chopper 24In[367]