91-057 Oregon Mulching Blade 19-3/8″ compatible with Cub Cadet/MTD

91-057 Oregon Mulching Blade compatible with Cub Cadet/MTD.  Center hole 3/4", requires 2 blades for 38" cut.  Blade Width 2.75", Thickness 0.187", Blade Length 19-3/8, Outerhold Diameter 5/16", Center hole size 3/4", center to center 2-1/2", offset 5/16", air lift 1-1/2".  Enhanced mulching for bagging and discharge efficiency.  Stays sharp and durable for longer.  Replaces Cub Cadet 742-0321,  742-0322,  742-3008,  742-3009,  742-3032,  74230090637,  759-3816,  759-3817,  759-3829,  942-0473A.  Replaces MTD 742-0322,  942-0473A.  Replaces Windsor 50-4170.  Replaces Arnold 490-110-C128.  Fits Cub Cadet models 1515,  1525,  213,  2130,  2135,  2146,  LT2138