QualityParts From Oregon That you can depend on. Fits 44" and 50" decks: For star center hole blades; Use with OregonĀ® 45-259 and 45-257 bearings, 44-371 or 44-370 pulleys and 85-023 shaft; Replaces AYP; ; ; Oregon Equipment Parts 82-510 Spindle Assy Ayp[800]