This MTD Lawn Mower Blade (335-083) is a replacement for MTD 742-0306, 742-0490, 742-0521, 742-0621, and 942-0621. Fits MTD 400 series walk-behinds with 21' decks. The replacement blade is 21' long by 2 1/4' wide and has formed edges. Hi-Lift Blade.
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