Oregon # Length Center Hole Width Thickness 90-309 21-5/8" 13/16 2.5" 0.250" Specifications Oregon Part Number 90-309 John Deere M143504 21-5/8" Center Hole: 13/16 Length 21-5/8" Width: 2.5" Thickness: 0.250" Offset: 1/2" Replacement Blades Are "made...
Oregon # Length Center Hole Width Thickness 90-309 21-5/8" 13/16 2.5" 0.250" Specifications Oregon Part Number 90-309 John Deere M143504 21-5/8" Center Hole: 13/16 Length 21-5/8" Width: 2.5" Thickness: 0.250" Offset: 1/2" Replacement Blades Are "made...