Kubota OEM Replacement Blade 330-555
FITS MODELS: RC44G 
Requires 3 for 44'' deck; hi-lift blade 
Length 15 3/8'' (390.5mm)
Centre Hole 11/16'' (17.5mm)
Outer Hole 5/16'' (7.9mm)
Centre 1 1/2'' (38.1mm)
Width 2'' (57.2mm)
Thickness .187'' (4.7mm)