Concrete breaking pliers comprising: a first gripper jaw having a frame-like first base body defining an interior of the first gripper jaw and having a first cutting edge, and a second gripper jaw having a second cutting edge and being pivotally connected to the first gripper jaw about a hinge axis to plunge into the interior, wherein at least one of the first and second cutting edges (5, 7) consists of two legs (9, 10) which substantially extend mirror-symmetrically to a central axis, which is perpendicular to the hinge axis, wherein the legs (9, 10) form a distal end portion of the cutting edge (5, 7), wherein the distal end portion is either a point tip of the cutting edge (5, 7) or a curve of the cutting edge (5, 7), and wherein the central axis intersects the hinge axis and the distal end portion, characterized in that the legs (9, 10) each have in a plan view (xy) perpendicular to the hinge axis and perpendicular to the central axis a cutting edge segment with a non-constant radius of curvature, the path of the cutting edge segment in the plan view is defined as follows: a virtual quarter ellipse is defined by a large semi-axis (a) extending parallel to the hinge axis of the concrete breaking pliers and a small semi-axis (b) ending at the distal end portion of the cutting edge (5, 7), a virtual half kloepper arch and a virtual half basket arch are each defined with a radius (ra), a calotte, a brim and a border (h), the radius (ra) being identical to the large semi-axis (a) of the quarter ellipse, and wherein peaks of the virtual half kloepper arch and the virtual half basket arch are each onto an intersection of the virtual quarter ellipse with the distal end portion, and the border (h) ends at the large semi-axis (a), and the cutting edge segment extends between the virtual quarter ellipse and the virtual half kloepper arch, and/or extends between the virtual quarter ellipse and the virtual half basket arch at the side of the hinge axis and outside the virtual quarter ellipse and the virtual half basket arch at the side of the distal end section of the cutting edge (5, 7). a first gripper jaw having a frame-like first base body defining an interior of the first gripper jaw and having a first cutting edge, and a second gripper jaw having a second cutting edge and being pivotally connected to the first gripper jaw about a hinge axis to plunge into the interior, wherein at least one of the first and second cutting edges (5, 7) consists of two legs (9, 10) which substantially extend mirror-symmetrically to a central axis, which is perpendicular to the hinge axis, wherein the legs (9, 10) form a distal end portion of the cutting edge (5, 7), wherein the distal end portion is either a point tip of the cutting edge (5, 7) or a curve of the cutting edge (5, 7), and wherein the central axis intersects the hinge axis and the distal end portion, the legs (9, 10) each have in a plan view (xy) perpendicular to the hinge axis and perpendicular to the central axis a cutting edge segment with a non-constant radius of curvature, the path of the cutting edge segment in the plan view is defined as follows: a virtual quarter ellipse is defined by a large semi-axis (a) extending parallel to the hinge axis of the concrete breaking pliers and a small semi-axis (b) ending at the distal end portion of the cutting edge (5, 7), a virtual half kloepper arch and a virtual half basket arch are each defined with a radius (ra), a calotte, a brim and a border (h), the radius (ra) being identical to the large semi-axis (a) of the quarter ellipse, and wherein peaks of the virtual half kloepper arch and the virtual half basket arch are each onto an intersection of the virtual quarter ellipse with the distal end portion, and the border (h) ends at the large semi-axis (a), and the cutting edge segment extends between the virtual quarter ellipse and the virtual half kloepper arch, and/or extends between the virtual quarter ellipse and the virtual half basket arch at the side of the hinge axis and outside the virtual quarter ellipse and the virtual half basket arch at the side of the distal end section of the cutting edge (5, 7). a virtual quarter ellipse is defined by a large semi-axis (a) extending parallel to the hinge axis of the concrete breaking pliers and a small semi-axis (b) ending at the distal end portion of the cutting edge (5, 7), a virtual half kloepper arch and a virtual half basket arch are each defined with a radius (ra), a calotte, a brim and a border (h), the radius (ra) being identical to the large semi-axis (a) of the quarter ellipse, and wherein peaks of the virtual half kloepper arch and the virtual half basket arch are each onto an intersection of the virtual quarter ellipse with the distal end portion, and the border (h) ends at the large semi-axis (a), and the cutting edge segment extends between the virtual quarter ellipse and the virtual half kloepper arch, and/or extends between the virtual quarter ellipse and the virtual half basket arch at the side of the hinge axis and outside the virtual quarter ellipse and the virtual half basket arch at the side of the distal end section of the cutting edge (5, 7). extends between the virtual quarter ellipse and the virtual half kloepper arch, and/or extends between the virtual quarter ellipse and the virtual half basket arch at the side of the hinge axis and outside the virtual quarter ellipse and the virtual half basket arch at the side of the distal end section of the cutting edge (5, 7).