Oregon 40-316 Edger Blade for MTD 781-0080, Pack Of 5 Replaces The Following OEM Part Numbers: MTD 781-0080 Type: Not Sharpened; Design: Rounded Edges, 3 Teeth Length: 9" ;Width: 2-1/2" ;Thickness: .090"; Center Hole: 5/8" Fits 500-600 Series Edgers