Snapper OEM Replacement Blade 335-289
FITS MODELS: 28'' mulching mowers 
Mulching blade 
Length 28'' (711.2mm)
Centre Hole 1 1/16'' (29.6mm)
Outer Hole 9/16'' (14.3mm)
Centre Hole 7 1/2'' (190.5mm)
Width 2 3/4'' (69.9mm)
Thickness .164'' (4.2mm)