John Deere OEM Replacement Blade 330-441
FITS MODELS: 102, 115, 125, 135, D100, D110, D120D, D130, LA100, LA110, LA120, X110, X120, LA105, LA115, LA135 and Z225
Requires 2 for 42'' deck; mulching blade 
Length 21 3/8'' (542.9mm)
Centre Hole 7 pt. star 
Width 2 3/4'' (69.9mm)
Thickness .164'' (4.2mm)