Mower Blade 21.00" long x 2.75" wide x .87"ID Center/one hole x .19" thick. CW Rotation. Flat-no drop from center portion and no lift edges on backside of cutting edge.
Mower Blade 23.75" long x 3.00" wide x 1.37"ID hole. Reversable, Flat blade with two sets of cutting edges so it can be flipped over to use both sides. CCW. Stamped 15715.