21" mulcher. Fits Yardman & White models 410/425
Replaces OEM #: 742-0721, 942-0721
Length: 21"
CenterHoleDia: 27/32"
OutsideHoleDia: 3/8"
CenterToCenter: 2-1/2"
width: 2-1/4"
Thick: .125"