Scag OEM Replacement Blade 340-158
FITS MODELS: Tiger Cub, Wildcat and Turf Tiger 
Requires 2 for 36'' deck 3 for 52'' deck; notched air lift blade 
Length 18'' (457.2mm)
Centre Hole 5/8'' (15.9mm)
Width 2 1/2'' (63.5mm)
Thickness .203'' (5.2mm)