Replaces MTD 742-0306, 742-0306A, 742-0490, 742-0521, 742-0621, 942-0621, OEM-742-0621
Superior mulching for bagging and discharge efficiency
For 21" cut, rear bagger, fits models 312R, 313R, 315R, 488, 828, 848, 100, 400, 500, 800
Blade Width: 2.25"
Blade Thickness: 0.134"
Blade Length: 20-15/16"
Outer Hole Diameter: 3/8"
Center Hole Size: 13/16"
Center-to-Center: 2-1/2"
OffSet: 1/4"
Air Lift: 13/16"