Mower Blade 19.37" long x 2.93" wide x .95"ID hole. X .13" thick. Back edge is formed up along backside of cutting edge and continues by the mounting hole area, .35" rise, so it is not flat across mounting hole area. lime green color. CW.
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.