Walker OEM Replacement Blade 355-032
Requires 1 of 335-032 and 1 of 335-024 for 42'' deck; bagger; medium-lift blade; left hand 
Length 22'' (558.8mm)
Centre Hole 5/8'' (15.9mm)
Outer Hole 3/16'' (4.9mm)
Centre 3'' (76.2mm)
Width 2 3/4'' (69.9mm)
Thickness .203'' 95.2mm)