Oregon, Lawn Mower Blade, Length 21 in, Model# 91-537

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- Replace your blade with confidence. Oregon blades exactly match the specifications of your lawn mower’s manufacturer.
- Length: 21"; Center Hole: 1/2"
- Requires 3 blades for 60" cut
- Major brand replacements include: Bush Hog
- Fits Bush Hog models: ATH, FTH
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