Set of 3, Made In USA, Replacement Blades For MTD 742-0644, 942-0644, 742-0645, 942-0645. Has Two 16 1/4" Blades, One 14 3/16".
Used on 46" MTD decks with 6 point spindles.  These decks have three blades, the blade in the center is approximately 2" shorter than the outside blades.