John Deere OEM Replacement Blade 330-615
FITS MODELS: L100-L118 and 14.542GS Sabre lawn tracots
Mulching blade 
Length 21 3/8'' (542.9mm)
Centre Hole 11/16'' (17.5mm)
Outer Hole 3/8'' (9.5mm)
Centre 3 11/16'' (93.7mm)
Width 2 1/2'' (63.5mm)
Thickness .164'' (4.2mm)