Club Cadet OEM Replacement Blade 325-742 
FITS MODELS: 2315 AND 2146
Requires 2 for 38'' deck; mulching blade 
Length 19 3/8'' (492.1mm)
Centre Hole 3/4'' (19mm)
Outer Holes 5/16'' (7.9mm)
Centre 2 1/2'' (63.5mm)
Width 2 3/4'' (63.5mm)
Thickness .187'' (5.2mm)