Oregon Blades - 396732. These blades measure: width 3'', thickness .250'', length 16-5/8'', center hole 13/16'', offset 3/8'', air lift 1'', color black. Tungsten carbide is "fused" into the blade creating an ultra-hard layer at the cutting edge and increasing the time between sharpening. This replaces John Deere part #s:M111522, M113517, M114581, M115328, M115495Thanks for looking!