John Deere OEM Replacement Blade 330-258
FITS MODELS: 110 and 112 with 38'' decks; 110, 208-223 and 300 with 39'' decks; 120, 140 and 300-317 with 41'' decks
Requires 3 blades; hi-lift blade 
Lenght 14'' (355.6mm)
Centre Hole 11/16'' (17.5mm) 
Width 2'' (50.8mm)
thickness .203'' (5.2mm)