Mower Blade 16.87" long x 2.25" wide x .55" X .75" ID oblong hole. 3/16" rise between center portion and outer cutting edge portion. Gold in color. CW. .16" thick.
Mower Blade 18.50" long x 2.75" wide x .75" center hole, outer holes .39". CW. High Lift Wing. Length measurement is actual diagonal length. New OEM Simplicity part number 1671565. Blade stamped 1671565 Simplicity. Fits Models 1690550 and 1690551...
Mower Blade 17.37" long x 2.00" wide x .69"ID hole x .20" thick. CW. Flat blade, no rise/fall from mounting hole area to cutting edge. Has a small amount of lift wing behind cutting edge.
Mower Blade 22.25" long x 2.00" wide x .75" center hole. Two outer holes .39"ID on 2.50" centers CW Rotation. 1704101 supersedes to 1716695. New OEM Simplicity part number/stamped 1704101.
Mower Blade 20.50" long x 2.50" wide x .75"ID center hole, outer holes .38"ID. CW. 1720679 supersedes to 1687014. This is part number 1720679 new OEM Simplicity.
Mower Blade 18.12" long x 2.50" wide x .75"ID hole. CW. New OEM. Serrated / Toothed Lift Wing. New OEM Simplicity part number 1721086. Blade stamped 1721086 Simplicity.
Mower Blade Used 15.87" long x 2.50" wide x .75"ID center hole, outer holes .40"ID on 2.50" centers. High Lift Blade. CW Used. Stamped Simplicity 1722090 USED.