406706 Fits 21" Cut Sears Craftsman Mulcher Push Mower Blade for a 21" walk behind mower. Mulching blade.
length: 21"
CenterHoleDia: 5/8"
OutsideHoleDia: 3/8"
CenterToCenter: 1-7/8"
width: 2-1/4"
Thick: .134"
replaces 176135