Mower Blade 21", Actual length 20.87" x 2.50" wide x .50"ID center/one hole x .25" thick. CW Rotation. Stens part number 320242, 320-242, Woods 70134, Snapper 79222, 15-6167. DOX7389
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.