John Deere OEM Replacement Blade 330-377
FITS MODELS: LT160 series 42'' C decks 1742GS and 1742HS Sabre lawn tractors 
Requires 2 for 42'' deck; mulching blade 
Length 21 1/2'' (546.2mm)
Centre Hole 11/16'' (17.5mm)
Width 2 1/2'' (63.5mm)
Thickness .164'' (4.2mm)