Toro OEM Replacement Blade 345-454
FITS MODELS: Walk behinds and Timecutter zero-turns
Requires 3 for 44'' deck; medium-lift blade 
Length 15 1/2'' (393.7mm)
Centre Hole 5/8'' (15.9mm)
Width 2 1/2'' (63.5mm)
Thickness .187'' (4.7mm)