Replacement lawnmower blade comprises two sections which curve in opposite directions, sides of bla

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The invention relates to a lawn mower blades, in particular as re-tooling measurer for commercially available Lawnmower, with a base body, which comprises a vertical central axis, about which the lawn mower blades can be displaced into a rotative cutting motion by a drive of the lawnmower, wherein the base body has at least one attachment in the region of the vertical central axis, such as a hole for screw attachment to the drive of the mower, and at least two of the vertical central axis in opposite facing to the vertical central axis forms with in each case at least one cutting area facing in the direction of rotation point-symmetrically built wings. It is the purpose of the invention, to create a lawn mower blades, which improve the cutting performance of a lawn mower with a clean sectional view. The problem is solved by a lawn mower blades with the features of claim 1, in particular with wings of the base body, at least in the cutting regions are concave formed in the direction of rotation in such a way that a part of the cutting region to one of the vertical central axis facing away from the vertical central axis facing leads part of the cutting region.