Viking OEM Replacement Blade 305-1479
FITS MODELS: MT5097.0, MT5097.0C, MT5097.0Z
Left hand blade 
Lenght 18 15/16'' (482mm)
Centre Hole 5/8'' (16.2mm)
Outer Holes 3/8'' (9.1mm)
Centre Hole 2 3/4'' (70mm)