A chisel comprising: a handle; a back end of the handle configured to be struck by a striking instrument; wherein the chisel comprises: an elongated blade extending along a longitudinal axis (A-A) joined with the handle, the blade including a main body portion comprising a first elongate side, a second opposite elongate side, a top surface a bottom surface provided along a plane substantially parallel to the longitudinal axis, and a front beveled cutting edge portion at a forward end of the main body portion, wherein the first elongate side comprises a longitudinally extending beveled side cutting edge portion, and the second opposite elongate side comprises a longitudinally extending strike surface; and the beveled side cutting edge portion and the strike surface are respectively provided substantially along the entire length of the first elongate side and the second opposite elongate side; wherein the beveled side cutting edge portion comprises a surface that forms an angle (Ω) with the bottom surface of the main body portion; characterized in that: the main body portion narrows in thickness as it extends in a forward direction from a relatively rearward portion thereof towards the front beveled cutting edge portion, and that narrows in thickness as it extends in a lateral direction from the strike surface towards the beveled side cutting edge portion and both the strike surface and the beveled side cutting edge portion have a variable thickness along the longitudinal axis (A-A). a handle; a back end of the handle configured to be struck by a striking instrument; wherein the chisel comprises: an elongated blade extending along a longitudinal axis (A-A) joined with the handle, the blade including a main body portion comprising a first elongate side, a second opposite elongate side, a top surface a bottom surface provided along a plane substantially parallel to the longitudinal axis, and a front beveled cutting edge portion at a forward end of the main body portion, wherein the first elongate side comprises a longitudinally extending beveled side cutting edge portion, and the second opposite elongate side comprises a longitudinally extending strike surface; and the beveled side cutting edge portion and the strike surface are respectively provided substantially along the entire length of the first elongate side and the second opposite elongate side; wherein the beveled side cutting edge portion comprises a surface that forms an angle (Ω) with the bottom surface of the main body portion; characterized in that: the main body portion narrows in thickness as it extends in a forward direction from a relatively rearward portion thereof towards the front beveled cutting edge portion, and that narrows in thickness as it extends in a lateral direction from the strike surface towards the beveled side cutting edge portion and both the strike surface and the beveled side cutting edge portion have a variable thickness along the longitudinal axis (A-A). an elongated blade extending along a longitudinal axis (A-A) joined with the handle, the blade including a main body portion comprising a first elongate side, a second opposite elongate side, a top surface a bottom surface provided along a plane substantially parallel to the longitudinal axis, and a front beveled cutting edge portion at a forward end of the main body portion, wherein the first elongate side comprises a longitudinally extending beveled side cutting edge portion, and the second opposite elongate side comprises a longitudinally extending strike surface; and the beveled side cutting edge portion and the strike surface are respectively provided substantially along the entire length of the first elongate side and the second opposite elongate side; wherein the beveled side cutting edge portion comprises a surface that forms an angle (Ω) with the bottom surface of the main body portion; characterized in that: the main body portion narrows in thickness as it extends in a forward direction from a relatively rearward portion thereof towards the front beveled cutting edge portion, and that narrows in thickness as it extends in a lateral direction from the strike surface towards the beveled side cutting edge portion and both the strike surface and the beveled side cutting edge portion have a variable thickness along the longitudinal axis (A-A). the main body portion narrows in thickness as it extends in a forward direction from a relatively rearward portion thereof towards the front beveled cutting edge portion, and that narrows in thickness as it extends in a lateral direction from the strike surface towards the beveled side cutting edge portion and both the strike surface and the beveled side cutting edge portion have a variable thickness along the longitudinal axis (A-A).