A cutting tool for a ceramic cutting device, said cutting tool comprising: - a cutting-wheel handle which has, along at least half of its length, an uniform cross-section with an outer contour including points arranged following two opposed straight rows, each of said two straight rows running from a first endpoint to a second endpoint; and - a cutting wheel mounted on an end of the cutting-wheel handle to rotate along a rotation plane, said rotation plane being parallel or substantially parallel to both of said two opposed straight rows; wherein said outer contour of the uniform cross-section of the cutting-wheel handle also includes points arranged following two curved line segments (S3, S4) of the edge of a circle enclosing an area into which said opposed straight rows lie, wherein said two curved line segments (S3, S4) and/or said two opposed straight rows are arranged symmetrically with respect to a symmetry line parallel to the two opposed straight rows; wherein the outer contour of the uniform cross-section of the cutting-wheel handle also includes points arranged following at least a straight line segment which is orthogonal to said two opposed straight rows and/or joins respective first endpoints of the two opposed straight rows; and wherein second endpoints of the curved line segments (S3, S4) are joined by a respective recessed segment lying in the area enclosed by said circle; characterised in that the points arranged following each of the two opposed straight rows are joined only through points which also follow the respective straight row, thus forming a straight line segment (S1, S2), and in that first endpoints of said curved line segments (S3, S4) are respectively joined to second endpoints of the two opposed straight line segments (S1, S2) through respective joining straight line segments (J1, J2) which are tilted with respect to the opposed straight rows, a first endpoint of each joining straight line segments (J1, J2) being directly connected to the first endpoint of a respective one of said curved line segments (S3, S4) and a second endpoint of the same joining straight line segment (J1, J2) being directly connected to the second endpoint of a respective one of the two opposed straight line segments (S1, S2). - a cutting-wheel handle which has, along at least half of its length, an uniform cross-section with an outer contour including points arranged following two opposed straight rows, each of said two straight rows running from a first endpoint to a second endpoint; and - a cutting wheel mounted on an end of the cutting-wheel handle to rotate along a rotation plane, said rotation plane being parallel or substantially parallel to both of said two opposed straight rows; wherein said outer contour of the uniform cross-section of the cutting-wheel handle also includes points arranged following two curved line segments (S3, S4) of the edge of a circle enclosing an area into which said opposed straight rows lie, wherein said two curved line segments (S3, S4) and/or said two opposed straight rows are arranged symmetrically with respect to a symmetry line parallel to the two opposed straight rows; wherein the outer contour of the uniform cross-section of the cutting-wheel handle also includes points arranged following at least a straight line segment which is orthogonal to said two opposed straight rows and/or joins respective first endpoints of the two opposed straight rows; and wherein second endpoints of the curved line segments (S3, S4) are joined by a respective recessed segment lying in the area enclosed by said circle; characterised in that the points arranged following each of the two opposed straight rows are joined only through points which also follow the respective straight row, thus forming a straight line segment (S1, S2), and in that first endpoints of said curved line segments (S3, S4) are respectively joined to second endpoints of the two opposed straight line segments (S1, S2) through respective joining straight line segments (J1, J2) which are tilted with respect to the opposed straight rows, a first endpoint of each joining straight line segments (J1, J2) being directly connected to the first endpoint of a respective one of said curved line segments (S3, S4) and a second endpoint of the same joining straight line segment (J1, J2) being directly connected to the second endpoint of a respective one of the two opposed straight line segments (S1, S2).